diff --git a/application/config/config.php b/application/config/config.php
index 0608348..8d08a74 100644
--- a/application/config/config.php
+++ b/application/config/config.php
@@ -282,7 +282,7 @@
 | 'sess_driver'				= the driver to load: cookie (Classic), native (PHP sessions),
 |	or your custom driver name
 | 'sess_valid_drivers'		= additional valid drivers which may be loaded
-| 'sess_cookie_name'		= the name you want for the cookie
+| 'sess_cookie_name'		= the name you want for the cookie, must contain only [0-9a-z_-] characters
 | 'sess_expiration'			= the number of SECONDS you want the session to last.
 |   by default sessions last 7200 seconds (two hours).  Set to zero for no expiration.
 | 'sess_expire_on_close'	= Whether to cause the session to expire automatically
diff --git a/application/config/constants.php b/application/config/constants.php
index dc84712..e71097b 100644
--- a/application/config/constants.php
+++ b/application/config/constants.php
@@ -81,11 +81,11 @@
 | Used to indicate the conditions under which the script is exit()ing.
 | While there is no universal standard for error codes, there are some
 | broad conventions.  Three such conventions are mentioned below, for
-| those who wish to make use of them.  The CodeIgniter defaults were 
+| those who wish to make use of them.  The CodeIgniter defaults were
 | chosen for the least overlap with these conventions, while still
 | leaving room for others to be defined in future versions and user
 | applications.
-| 
+|
 | The three main conventions used for determining exit status codes
 | are as follows:
 |
@@ -108,7 +108,6 @@
 define('EXIT_DATABASE', 8); // database error
 define('EXIT__AUTO_MIN', 9); // lowest automatically-assigned error code
 define('EXIT__AUTO_MAX', 125); // highest automatically-assigned error code
- 
 
 /* End of file constants.php */
 /* Location: ./application/config/constants.php */
\ No newline at end of file
diff --git a/application/config/foreign_chars.php b/application/config/foreign_chars.php
index b0c32cf..ab98224 100644
--- a/application/config/foreign_chars.php
+++ b/application/config/foreign_chars.php
@@ -50,16 +50,16 @@
 	'/д/' => 'd',
 	'/Ð|Ď|Đ|Δ/' => 'Dj',
 	'/ð|ď|đ|δ/' => 'dj',
-	'/È|É|Ê|Ë|Ē|Ĕ|Ė|Ę|Ě|Ε|Έ|Ẽ|Ẻ|Ẹ|Ề|Ế|Ễ|Ể|Ệ|Е|Ё|Э/' => 'E',
-	'/è|é|ê|ë|ē|ĕ|ė|ę|ě|έ|ε|ẽ|ẻ|ẹ|ề|ế|ễ|ể|ệ|е|ё|э/' => 'e',
+	'/È|É|Ê|Ë|Ē|Ĕ|Ė|Ę|Ě|Ε|Έ|Ẽ|Ẻ|Ẹ|Ề|Ế|Ễ|Ể|Ệ|Е|Э/' => 'E',
+	'/è|é|ê|ë|ē|ĕ|ė|ę|ě|έ|ε|ẽ|ẻ|ẹ|ề|ế|ễ|ể|ệ|е|э/' => 'e',
 	'/Ф/' => 'F',
 	'/ф/' => 'f',
-	'/Ĝ|Ğ|Ġ|Ģ|Γ|Г/' => 'G',
-	'/ĝ|ğ|ġ|ģ|γ|г/' => 'g',
+	'/Ĝ|Ğ|Ġ|Ģ|Γ|Г|Ґ/' => 'G',
+	'/ĝ|ğ|ġ|ģ|γ|г|ґ/' => 'g',
 	'/Ĥ|Ħ/' => 'H',
 	'/ĥ|ħ/' => 'h',
-	'/Ì|Í|Î|Ï|Ĩ|Ī|Ĭ|Ǐ|Į|İ|Η|Ή|Ί|Ι|Ϊ|Ỉ|Ị|И|Й/' => 'I',
-	'/ì|í|î|ï|ĩ|ī|ĭ|ǐ|į|ı|η|ή|ί|ι|ϊ|ỉ|ị|и|й/' => 'i',
+	'/Ì|Í|Î|Ï|Ĩ|Ī|Ĭ|Ǐ|Į|İ|Η|Ή|Ί|Ι|Ϊ|Ỉ|Ị|И|Ы/' => 'I',
+	'/ì|í|î|ï|ĩ|ī|ĭ|ǐ|į|ı|η|ή|ί|ι|ϊ|ỉ|ị|и|ы|ї/' => 'i',
 	'/Ĵ/' => 'J',
 	'/ĵ/' => 'j',
 	'/Ķ|Κ|К/' => 'K',
@@ -80,10 +80,10 @@
 	'/ś|ŝ|ş|ș|š|ſ|σ|ς|с/' => 's',
 	'/Ț|Ţ|Ť|Ŧ|τ|Т/' => 'T',
 	'/ț|ţ|ť|ŧ|т/' => 't',
-	'/Ù|Ú|Û|Ũ|Ū|Ŭ|Ů|Ű|Ų|Ư|Ǔ|Ǖ|Ǘ|Ǚ|Ǜ|Ũ|Ủ|Ụ|Ừ|Ứ|Ữ|Ử|Ự|У|Ъ/' => 'U',
-	'/ù|ú|û|ũ|ū|ŭ|ů|ű|ų|ư|ǔ|ǖ|ǘ|ǚ|ǜ|υ|ύ|ϋ|ủ|ụ|ừ|ứ|ữ|ử|ự|у|ъ/' => 'u',
-	'/Ý|Ÿ|Ŷ|Υ|Ύ|Ϋ|Ỳ|Ỹ|Ỷ|Ỵ/' => 'Y',
-	'/ý|ÿ|ŷ|ỳ|ỹ|ỷ|ỵ/' => 'y',
+	'/Ù|Ú|Û|Ũ|Ū|Ŭ|Ů|Ű|Ų|Ư|Ǔ|Ǖ|Ǘ|Ǚ|Ǜ|Ũ|Ủ|Ụ|Ừ|Ứ|Ữ|Ử|Ự|У/' => 'U',
+	'/ù|ú|û|ũ|ū|ŭ|ů|ű|ų|ư|ǔ|ǖ|ǘ|ǚ|ǜ|υ|ύ|ϋ|ủ|ụ|ừ|ứ|ữ|ử|ự|у/' => 'u',
+	'/Ý|Ÿ|Ŷ|Υ|Ύ|Ϋ|Ỳ|Ỹ|Ỷ|Ỵ|Й/' => 'Y',
+	'/ý|ÿ|ŷ|ỳ|ỹ|ỷ|ỵ|й/' => 'y',
 	'/В/' => 'V',
 	'/в/' => 'v',
 	'/Ŵ/' => 'W',
@@ -91,7 +91,7 @@
 	'/Ź|Ż|Ž|Ζ|З/' => 'Z',
 	'/ź|ż|ž|ζ|з/' => 'z',
 	'/Æ|Ǽ/' => 'AE',
-	'/ß/'=> 'ss',
+	'/ß/' => 'ss',
 	'/Ĳ/' => 'IJ',
 	'/ĳ/' => 'ij',
 	'/Œ/' => 'OE',
@@ -101,22 +101,28 @@
 	'/β/' => 'v',
 	'/μ/' => 'm',
 	'/ψ/' => 'ps',
-	'/Ж/'=>'Zh',
-	'/ж/'=>'zh',
-	'/Х/'=>'Kh',
-	'/х/'=>'kh',
-	'/Ц/'=>'Tc',
-	'/ц/'=>'tc',
-	'/Ч/'=>'Ch',
-	'/ч/'=>'ch',
-	'/Ш/'=>'Sh',
-	'/ш/'=>'sh',
-	'/Щ/'=>'Shch',
-	'/щ/'=>'shch',
-	'/Ю/'=>'Iu',
-	'/ю/'=>'iu',
-	'/Я/'=>'Ia',
-	'/я/'=>'ia'
+	'/Ё/' => 'Yo',
+	'/ё/' => 'yo',
+	'/Є/' => 'Ye',
+	'/є/' => 'ye',
+	'/Ї/' => 'Yi',
+	'/Ж/' => 'Zh',
+	'/ж/' => 'zh',
+	'/Х/' => 'Kh',
+	'/х/' => 'kh',
+	'/Ц/' => 'Ts',
+	'/ц/' => 'ts',
+	'/Ч/' => 'Ch',
+	'/ч/' => 'ch',
+	'/Ш/' => 'Sh',
+	'/ш/' => 'sh',
+	'/Щ/' => 'Shch',
+	'/щ/' => 'shch',
+	'/Ъ|ъ|Ь|ь/' => '',
+	'/Ю/' => 'Yu',
+	'/ю/' => 'yu',
+	'/Я/' => 'Ya',
+	'/я/' => 'ya'
 );
 
 /* End of file foreign_chars.php */
diff --git a/application/config/mimes.php b/application/config/mimes.php
index 32d10f6..ad36021 100644
--- a/application/config/mimes.php
+++ b/application/config/mimes.php
@@ -78,6 +78,7 @@
 	'sit'	=>	'application/x-stuffit',
 	'tar'	=>	'application/x-tar',
 	'tgz'	=>	array('application/x-tar', 'application/x-gzip-compressed'),
+	'z'	=>	'application/x-compress',
 	'xhtml'	=>	'application/xhtml+xml',
 	'xht'	=>	'application/xhtml+xml',
 	'zip'	=>	array('application/x-zip', 'application/zip', 'application/x-zip-compressed', 'application/s-compressed', 'multipart/x-zip'),
diff --git a/system/core/CodeIgniter.php b/system/core/CodeIgniter.php
index c962fda..c121162 100644
--- a/system/core/CodeIgniter.php
+++ b/system/core/CodeIgniter.php
@@ -73,11 +73,10 @@
  * ------------------------------------------------------
  */
 	set_error_handler('_exception_handler');
+	register_shutdown_function('_shutdown_handler');
 
-	if ( ! is_php('5.4'))
-	{
-		@ini_set('magic_quotes_runtime', 0); // Kill magic quotes
-	}
+	// Kill magic quotes
+	is_php('5.4') OR @ini_set('magic_quotes_runtime', 0);
 
 /*
  * ------------------------------------------------------
diff --git a/system/core/Common.php b/system/core/Common.php
index 7f296b1..c25707e 100644
--- a/system/core/Common.php
+++ b/system/core/Common.php
@@ -82,7 +82,7 @@
 	function is_really_writable($file)
 	{
 		// If we're on a Unix server with safe_mode off we call is_writable
-		if (DIRECTORY_SEPARATOR === '/' && (bool) @ini_get('safe_mode') === FALSE)
+		if (DIRECTORY_SEPARATOR === '/' && (is_php('5.4') OR (bool) @ini_get('safe_mode') === FALSE))
 		{
 			return is_writable($file);
 		}
@@ -429,10 +429,9 @@
 	 *
 	 * @param	string	the error level: 'error', 'debug' or 'info'
 	 * @param	string	the error message
-	 * @param	bool	whether the error is a native PHP error
 	 * @return	void
 	 */
-	function log_message($level, $message, $php_error = FALSE)
+	function log_message($level, $message)
 	{
 		static $_log;
 
@@ -442,7 +441,7 @@
 			$_log[0] =& load_class('Log', 'core');
 		}
 
-		$_log[0]->write_log($level, $message, $php_error);
+		$_log[0]->write_log($level, $message);
 	}
 }
 
@@ -577,6 +576,34 @@
 	}
 }
 
+// ------------------------------------------------------------------------
+
+if ( ! function_exists('_shutdown_handler'))
+{
+	/**
+	 * Shutdown Handler
+	 *
+	 * This is the shutdown handler that is declared at the top
+	 * of CodeIgniter.php. The main reason we use this is to simulate
+	 * a complete custom exception handler.
+	 *
+	 * E_STRICT is purposivly neglected because such events may have
+	 * been caught. Duplication or none? None is preferred for now.
+	 *
+	 * @link	http://insomanic.me.uk/post/229851073/php-trick-catching-fatal-errors-e-error-with-a
+	 * @return	void
+	 */
+	function _shutdown_handler()
+	{
+		$last_error = function_exists('error_get_last') ? error_get_last() : NULL;
+		if (isset($last_error) &&
+			($last_error['type'] & (E_ERROR | E_PARSE | E_CORE_ERROR | E_CORE_WARNING | E_COMPILE_ERROR | E_COMPILE_WARNING)))
+		{
+			_exception_handler($last_error['type'], $last_error['message'], $last_error['file'], $last_error['line']);
+		}
+	}
+}
+
 // --------------------------------------------------------------------
 
 if ( ! function_exists('remove_invisible_characters'))
diff --git a/system/core/Exceptions.php b/system/core/Exceptions.php
index 9c68d06..d7e5ed4 100644
--- a/system/core/Exceptions.php
+++ b/system/core/Exceptions.php
@@ -91,7 +91,7 @@
 	public function log_exception($severity, $message, $filepath, $line)
 	{
 		$severity = isset($this->levels[$severity]) ? $this->levels[$severity] : $severity;
-		log_message('error', 'Severity: '.$severity.'  --> '.$message. ' '.$filepath.' '.$line, TRUE);
+		log_message('error', 'Severity: '.$severity.'  --> '.$message. ' '.$filepath.' '.$line);
 	}
 
 	// --------------------------------------------------------------------
diff --git a/system/core/Input.php b/system/core/Input.php
index 24e21ea..8c32e45 100644
--- a/system/core/Input.php
+++ b/system/core/Input.php
@@ -693,7 +693,14 @@
 
 			foreach ($_COOKIE as $key => $val)
 			{
-				$_COOKIE[$this->_clean_input_keys($key)] = $this->_clean_input_data($val);
+				if (($cookie_key = $this->_clean_input_keys($key)) !== FALSE)
+				{
+					$_COOKIE[$cookie_key] = $this->_clean_input_data($val);
+				}
+				else
+				{
+					unset($_COOKIE[$key]);
+				}
 			}
 		}
 
@@ -706,7 +713,7 @@
 			$this->security->csrf_verify();
 		}
 
-		log_message('debug', 'Global POST and COOKIE data sanitized');
+		log_message('debug', 'Global POST, GET and COOKIE data sanitized');
 	}
 
 	// --------------------------------------------------------------------
@@ -776,15 +783,25 @@
 	 * only named with alpha-numeric text and a few other items.
 	 *
 	 * @param	string	$str	Input string
-	 * @return	string
+	 * @param	string	$fatal	Whether to terminate script exection
+	 *				or to return FALSE if an invalid
+	 *				key is encountered
+	 * @return	string|bool
 	 */
-	protected function _clean_input_keys($str)
+	protected function _clean_input_keys($str, $fatal = TRUE)
 	{
 		if ( ! preg_match('/^[a-z0-9:_\/|-]+$/i', $str))
 		{
-			set_status_header(503);
-			echo 'Disallowed Key Characters.';
-			exit(EXIT_USER_INPUT);
+			if ($fatal === TRUE)
+			{
+				return FALSE;
+			}
+			else
+			{
+				set_status_header(503);
+				echo 'Disallowed Key Characters.';
+				exit(EXIT_USER_INPUT);
+			}
 		}
 
 		// Clean UTF-8 if supported
diff --git a/system/core/Loader.php b/system/core/Loader.php
index 1709c2d..2eef997 100644
--- a/system/core/Loader.php
+++ b/system/core/Loader.php
@@ -222,7 +222,7 @@
 		{
 			foreach ($model as $key => $value)
 			{
-				$this->model(is_int($key) ? $value : $key, $value);
+				is_int($key) ? $this->model($value, '', $db_conn) : $this->model($key, $value, $db_conn);
 			}
 			return;
 		}
diff --git a/system/core/Log.php b/system/core/Log.php
index e4d72b5..b2327b8 100644
--- a/system/core/Log.php
+++ b/system/core/Log.php
@@ -140,10 +140,9 @@
 	 *
 	 * @param	string	the error level: 'error', 'debug' or 'info'
 	 * @param	string	the error message
-	 * @param	bool	whether the error is a native PHP error
 	 * @return	bool
 	 */
-	public function write_log($level, $msg, $php_error = FALSE)
+	public function write_log($level, $msg)
 	{
 		if ($this->_enabled === FALSE)
 		{
diff --git a/system/core/Output.php b/system/core/Output.php
index 06d7a86..7c2a64d 100644
--- a/system/core/Output.php
+++ b/system/core/Output.php
@@ -841,14 +841,43 @@
 			$output = substr_replace($output, '', 0, $pos);
 
 			// Remove closing tag and save it for later
-			$pos = strpos($output, '</');
-			$closing_tag = substr($output, $pos, strlen($output));
+			$pos = strrpos($output, '</');
+			$closing_tag = substr($output, $pos);
 			$output = substr_replace($output, '', $pos);
 		}
 
 		// Remove CSS comments
 		$output = preg_replace('!/\*[^*]*\*+([^/][^*]*\*+)*/!i', '', $output);
 
+		// Remove Javascript inline comments
+		if ($has_tags === TRUE && strpos(strtolower($open_tag), 'script') !== FALSE)
+		{
+			$lines = preg_split('/\r?\n|\n?\r/', $output);
+			foreach ($lines as &$line)
+			{
+				$in_string = $in_dstring = FALSE;
+				for ($i = 0, $len = strlen($line); $i < $len; $i++)
+				{
+					if ( ! $in_string && ! $in_dstring && substr($line, $i, 2) === '//')
+					{
+						$line = substr($line, 0, $i);
+						break;
+					}
+
+					if ($line[$i] === "'" && ! $in_dstring)
+					{
+						$in_string = ! $in_string;
+					}
+					elseif ($line[$i] === '"' && ! $in_string)
+					{
+						$in_dstring = ! $in_dstring;
+					}
+				}
+			}
+
+			$output = implode("\n", $lines);
+		}
+
 		// Remove spaces around curly brackets, colons,
 		// semi-colons, parenthesis, commas
 		$chunks = preg_split('/([\'|"]).+(?![^\\\]\\1)\\1/iU', $output, -1, PREG_SPLIT_OFFSET_CAPTURE);
@@ -899,11 +928,11 @@
 				}
 			}
 
-			if ($value === "'")
+			if ($value === "'" && ! $in_dstring)
 			{
 				$in_string = ! $in_string;
 			}
-			elseif ($value === '"')
+			elseif ($value === '"' && ! $in_string)
 			{
 				$in_dstring = ! $in_dstring;
 			}
diff --git a/system/database/DB_query_builder.php b/system/database/DB_query_builder.php
index e6a1082..a36501e 100644
--- a/system/database/DB_query_builder.php
+++ b/system/database/DB_query_builder.php
@@ -1138,7 +1138,7 @@
 	 * ORDER BY
 	 *
 	 * @param	string	$orderby
-	 * @param	string	$direction	ASC or DESC
+	 * @param	string	$direction	ASC, DESC or RANDOM
 	 * @param	bool	$escape
 	 * @return	CI_DB_query_builder
 	 */
@@ -1152,7 +1152,7 @@
 
 			// Do we have a seed value?
 			$orderby = ctype_digit((string) $orderby)
-				? $orderby = sprintf($this->_random_keyword[1], $orderby)
+				? sprintf($this->_random_keyword[1], $orderby)
 				: $this->_random_keyword[0];
 		}
 		elseif (empty($orderby))
diff --git a/system/database/drivers/mysqli/mysqli_driver.php b/system/database/drivers/mysqli/mysqli_driver.php
index ef2cb8a..0f3c6fc 100644
--- a/system/database/drivers/mysqli/mysqli_driver.php
+++ b/system/database/drivers/mysqli/mysqli_driver.php
@@ -241,9 +241,10 @@
 		// even if the queries produce a successful result.
 		$this->_trans_failure = ($test_mode === TRUE);
 
-		$this->simple_query('SET AUTOCOMMIT=0');
-		$this->simple_query('START TRANSACTION'); // can also be BEGIN or BEGIN WORK
-		return TRUE;
+		$this->conn_id->autocommit(FALSE);
+		return is_php('5.5')
+			? $this->conn_id->begin_transaction()
+			: $this->simple_query('START TRANSACTION'); // can also be BEGIN or BEGIN WORK
 	}
 
 	// --------------------------------------------------------------------
@@ -261,9 +262,13 @@
 			return TRUE;
 		}
 
-		$this->simple_query('COMMIT');
-		$this->simple_query('SET AUTOCOMMIT=1');
-		return TRUE;
+		if ($this->conn_id->commit())
+		{
+			$this->conn_id->autocommit(TRUE);
+			return TRUE;
+		}
+
+		return FALSE;
 	}
 
 	// --------------------------------------------------------------------
@@ -281,9 +286,13 @@
 			return TRUE;
 		}
 
-		$this->simple_query('ROLLBACK');
-		$this->simple_query('SET AUTOCOMMIT=1');
-		return TRUE;
+		if ($this->conn_id->rollback())
+		{
+			$this->conn_id->autocommit(TRUE);
+			return TRUE;
+		}
+
+		return FALSE;
 	}
 
 	// --------------------------------------------------------------------
diff --git a/system/database/drivers/pdo/subdrivers/pdo_pgsql_driver.php b/system/database/drivers/pdo/subdrivers/pdo_pgsql_driver.php
index d0cdde2..fda3f23 100644
--- a/system/database/drivers/pdo/subdrivers/pdo_pgsql_driver.php
+++ b/system/database/drivers/pdo/subdrivers/pdo_pgsql_driver.php
@@ -137,7 +137,7 @@
 	 */
 	public function is_write_type($sql)
 	{
-		return (bool) preg_match('/^\s*"?(SET|INSERT(?![^\)]+\)\s+RETURNING)|UPDATE|DELETE|REPLACE|CREATE|DROP|TRUNCATE|LOAD|COPY|ALTER|RENAME|GRANT|REVOKE|LOCK|UNLOCK|REINDEX)\s+/i', $sql);
+		return (bool) preg_match('/^\s*"?(SET|INSERT(?![^\)]+\)\s+RETURNING)|UPDATE(?!.*\sRETURNING)|DELETE|CREATE|DROP|TRUNCATE|LOAD|COPY|ALTER|RENAME|GRANT|REVOKE|LOCK|UNLOCK|REINDEX)\s+/i', str_replace(array("\r\n", "\r", "\n"), ' ', $sql));
 	}
 
 	// --------------------------------------------------------------------
@@ -166,7 +166,7 @@
 	 * ORDER BY
 	 *
 	 * @param	string	$orderby
-	 * @param	string	$direction	ASC or DESC
+	 * @param	string	$direction	ASC, DESC or RANDOM
 	 * @param	bool	$escape
 	 * @return	object
 	 */
diff --git a/system/database/drivers/postgre/postgre_driver.php b/system/database/drivers/postgre/postgre_driver.php
index ac7345a..b72fb87 100644
--- a/system/database/drivers/postgre/postgre_driver.php
+++ b/system/database/drivers/postgre/postgre_driver.php
@@ -318,7 +318,7 @@
 	 */
 	public function is_write_type($sql)
 	{
-		return (bool) preg_match('/^\s*"?(SET|INSERT(?![^\)]+\)\s+RETURNING)|UPDATE|DELETE|REPLACE|CREATE|DROP|TRUNCATE|LOAD|COPY|ALTER|RENAME|GRANT|REVOKE|LOCK|UNLOCK|REINDEX)\s+/i', $sql);
+		return (bool) preg_match('/^\s*"?(SET|INSERT(?![^\)]+\)\s+RETURNING)|UPDATE(?!.*\sRETURNING)|DELETE|CREATE|DROP|TRUNCATE|LOAD|COPY|ALTER|RENAME|GRANT|REVOKE|LOCK|UNLOCK|REINDEX)\s+/i', str_replace(array("\r\n", "\r", "\n"), ' ', $sql));
 	}
 
 	// --------------------------------------------------------------------
@@ -331,7 +331,7 @@
 	 */
 	protected function _escape_str($str)
 	{
-		return pg_escape_string($str);
+		return pg_escape_string($this->conn_id, $str);
 	}
 
 	// --------------------------------------------------------------------
@@ -346,7 +346,11 @@
 	 */
 	public function escape($str)
 	{
-		if (is_bool($str))
+		if (is_php('5.4.4') && (is_string($str) OR (is_object($str) && method_exists($str, '__toString'))))
+		{
+			return pg_escape_literal($this->conn_id, $str);
+		}
+		elseif (is_bool($str))
 		{
 			return ($str) ? 'TRUE' : 'FALSE';
 		}
@@ -512,7 +516,7 @@
 	 * ORDER BY
 	 *
 	 * @param	string	$orderby
-	 * @param	string	$direction	ASC or DESC
+	 * @param	string	$direction	ASC, DESC or RANDOM
 	 * @param	bool	$escape
 	 * @return	object
 	 */
diff --git a/system/helpers/form_helper.php b/system/helpers/form_helper.php
index 146c0f5..0cc5bd1 100644
--- a/system/helpers/form_helper.php
+++ b/system/helpers/form_helper.php
@@ -675,37 +675,22 @@
 	 */
 	function set_select($field = '', $value = '', $default = FALSE)
 	{
-		$OBJ =& _get_validation_object();
+		$CI =& get_instance();
 
-		if ($OBJ === FALSE)
+		if (isset($CI->form_validation) && is_object($CI->form_validation) && $CI->form_validation->has_rule($field))
 		{
-			if ( ! isset($_POST[$field]))
-			{
-				if (count($_POST) === 0 && $default === TRUE)
-				{
-					return ' selected="selected"';
-				}
-				return '';
-			}
-
-			$field = $_POST[$field];
-
-			if (is_array($field))
-			{
-				if ( ! in_array($value, $field))
-				{
-					return '';
-				}
-			}
-			elseif (($field == '' OR $value == '') OR $field !== $value)
-			{
-				return '';
-			}
-
+			return $CI->form_validation->set_select($field, $value, $default);
+		}
+		elseif (($input = $CI->input->post($field, FALSE)) === NULL)
+		{
+			return ($default === TRUE) ? ' selected="selected"' : '';
+		}
+		elseif (is_array($input) && in_array($value, $input, TRUE))
+		{
 			return ' selected="selected"';
 		}
 
-		return $OBJ->set_select($field, $value, $default);
+		return ($input === $value) ? ' selected="selected"' : '';
 	}
 }
 
@@ -726,37 +711,22 @@
 	 */
 	function set_checkbox($field = '', $value = '', $default = FALSE)
 	{
-		$OBJ =& _get_validation_object();
+		$CI =& get_instance();
 
-		if ($OBJ === FALSE)
+		if (isset($CI->form_validation) && is_object($CI->form_validation) && $CI->form_validation->has_rule($field))
 		{
-			if ( ! isset($_POST[$field]))
-			{
-				if (count($_POST) === 0 && $default === TRUE)
-				{
-					return ' checked="checked"';
-				}
-				return '';
-			}
-
-			$field = $_POST[$field];
-
-			if (is_array($field))
-			{
-				if ( ! in_array($value, $field))
-				{
-					return '';
-				}
-			}
-			elseif (($field == '' OR $value == '') OR $field !== $value)
-			{
-				return '';
-			}
-
+			return $CI->form_validation->set_checkbox($field, $value, $default);
+		}
+		elseif (($input = $CI->input->post($field, FALSE)) === NULL)
+		{
+			return ($default === TRUE) ? ' checked="checked"' : '';
+		}
+		elseif (is_array($input) && in_array($value, $input, TRUE))
+		{
 			return ' checked="checked"';
 		}
 
-		return $OBJ->set_checkbox($field, $value, $default);
+		return ($input === $value) ? ' checked="checked"' : '';
 	}
 }
 
@@ -770,47 +740,25 @@
 	 * Let's you set the selected value of a radio field via info in the POST array.
 	 * If Form Validation is active it retrieves the info from the validation class
 	 *
-	 * @param	string
-	 * @param	string
-	 * @param	bool
+	 * @param	string	$field
+	 * @param	string	$value
+	 * @param	bool	$default
 	 * @return	string
 	 */
 	function set_radio($field = '', $value = '', $default = FALSE)
 	{
-		$OBJ =& _get_validation_object();
+		$CI =& get_instance();
 
-		if ($OBJ === FALSE)
+		if (isset($CI->form_validation) && is_object($CI->form_validation) && $CI->form_validation->has_rule($field))
 		{
-			if ( ! isset($_POST[$field]))
-			{
-				if (count($_POST) === 0 && $default === TRUE)
-				{
-					return ' checked="checked"';
-				}
-				return '';
-			}
-
-			$field = $_POST[$field];
-
-			if (is_array($field))
-			{
-				if ( ! in_array($value, $field))
-				{
-					return '';
-				}
-			}
-			else
-			{
-				if (($field == '' OR $value == '') OR $field !== $value)
-				{
-					return '';
-				}
-			}
-
-			return ' checked="checked"';
+			return $CI->form_validation->set_radio($field, $value, $default);
+		}
+		elseif (($input = $CI->input->post($field, FALSE)) === NULL)
+		{
+			return ($default === TRUE) ? ' checked="checked"' : '';
 		}
 
-		return $OBJ->set_radio($field, $value, $default);
+		return ($input === $value) ? ' checked="checked"' : '';
 	}
 }
 
diff --git a/system/libraries/Email.php b/system/libraries/Email.php
index 082629a..efdbfd7 100644
--- a/system/libraries/Email.php
+++ b/system/libraries/Email.php
@@ -399,9 +399,9 @@
 		else
 		{
 			$this->_smtp_auth = ! ($this->smtp_user === '' && $this->smtp_pass === '');
-			$this->_safe_mode = (bool) @ini_get('safe_mode');
 		}
 
+		$this->_safe_mode = ( ! is_php('5.4') && (bool) @ini_get('safe_mode'));
 		$this->charset = strtoupper($this->charset);
 
 		log_message('debug', 'Email Class Initialized');
@@ -451,7 +451,6 @@
 		$this->clear();
 
 		$this->_smtp_auth = ! ($this->smtp_user === '' && $this->smtp_pass === '');
-		$this->_safe_mode = (bool) @ini_get('safe_mode');
 
 		return $this;
 	}
diff --git a/system/libraries/Upload.php b/system/libraries/Upload.php
index 15eb74b..0609738 100644
--- a/system/libraries/Upload.php
+++ b/system/libraries/Upload.php
@@ -1245,7 +1245,7 @@
 				}
 			}
 
-			if ( (bool) @ini_get('safe_mode') === FALSE && function_usable('shell_exec'))
+			if ((bool) @ini_get('safe_mode') === FALSE && function_usable('shell_exec'))
 			{
 				$mime = @shell_exec($cmd);
 				if (strlen($mime) > 0)
diff --git a/tests/mocks/core/common.php b/tests/mocks/core/common.php
index 0ccfe1e..e5dc29c 100644
--- a/tests/mocks/core/common.php
+++ b/tests/mocks/core/common.php
@@ -178,7 +178,7 @@
 
 if ( ! function_exists('log_message'))
 {
-	function log_message($level, $message, $php_error = FALSE)
+	function log_message($level, $message)
 	{
 		return TRUE;
 	}
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index 8498918..a66fb26 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -181,6 +181,7 @@
       - Server version checking is now done via ``mysqli::$server_info`` instead of running an SQL query.
       - Added persistent connections support for PHP >= 5.3.
       - Added support for ``backup()`` in :doc:`Database Utilities <database/utilities>`.
+      - Changed methods ``trans_begin()``, ``trans_commit()`` and ``trans_rollback()`` to use the PHP API instead of sending queries.	
 
    -  Improved support of the PDO driver, including:
 
@@ -198,6 +199,7 @@
       - Removed ``limit()`` and ``order_by()`` support for *UPDATE* and *DELETE* queries as PostgreSQL does not support those features.
       - Added a work-around for dead persistent connections to be re-created after a database restart.
       - Changed ``db_connect()`` to include the (new) **schema** value into Postgre's **search_path** session variable.
+      - ``pg_escape_literal()`` is now used for escaping strings, if available.
 
    -  Improved support of the CUBRID driver, including:
 
@@ -390,6 +392,7 @@
       -  Changed methods ``get()``, ``post()``, ``get_post()``, ``cookie()``, ``server()``, ``user_agent()`` to return NULL instead of FALSE when no value is found.
       -  Added method ``post_get()`` and changed ``get_post()`` to search in GET data first. Both methods' names now properly match their GET/POST data search priorities.
       -  Changed method ``_fetch_from_array()`` to parse array notation in field name.
+      -  Added an option for ``_clean_input_keys()`` to return FALSE instead of terminating the whole script.
 
    -  :doc:`Common functions <general/common_functions>` changes include:
 
@@ -399,6 +402,7 @@
       -  Changed ``_exception_handler()`` to respect php.ini *display_errors* setting.
       -  Added function :php:func:`is_https()` to check if a secure connection is used.
       -  Added function :php:func:`function_usable()` to check if a function exists and is not disabled by `Suhosin <http://www.hardened-php.net/suhosin/>`.
+      -  Removed the third (`$php_error`) from function :php:func:`log_message()`.
 
    -  :doc:`Output Library <libraries/output>` changes include:
 
@@ -436,6 +440,7 @@
    -  Added support for HTTP-Only cookies with new config option *cookie_httponly* (default FALSE).
    -  Renamed method ``_call_hook()`` to ``call_hook()`` in the :doc:`Hooks Library <general/hooks>`.
    -  ``$config['time_reference']`` now supports all timezone strings supported by PHP.
+   -  Fatal PHP errors are now also passed to ``_exception_handler()``, so they can be logged.
 
 
 Bug fixes for 3.0
@@ -464,7 +469,7 @@
 -  Fixed a possible bug in ``CI_Input::is_ajax_request()`` where some clients might not send the X-Requested-With HTTP header value exactly as 'XmlHttpRequest'.
 -  Fixed a bug (#1039) - MySQL's _backup() method failed due to a table name not being escaped.
 -  Fixed a bug (#1070) - CI_DB_driver::initialize() didn't set a character set if a database is not selected.
--  Fixed a bug (#177) - CI_Form_validation::set_value() didn't set the default value if POST data is NULL.
+-  Fixed a bug (#177) - ``CI_Form_validation::set_value()`` didn't set the default value if POST data is NULL.
 -  Fixed a bug (#68, #414) - Oracle's escape_str() didn't properly escape LIKE wild characters.
 -  Fixed a bug (#81) - ODBC's list_fields() and field_data() methods skipped the first column due to odbc_field_*() functions' index starting at 1 instead of 0.
 -  Fixed a bug (#129) - ODBC's num_rows() returned -1 in some cases, due to not all subdrivers supporting the odbc_num_rows() function.
@@ -592,7 +597,7 @@
 -  Fixed a bug (#2239) - :doc:`Email Library <libraries/email>` improperly handled the Subject when used with ``bcc_batch_mode`` resulting in E_WARNING messages and an empty Subject.
 -  Fixed a bug (#2234) - :doc:`Query Builder <database/query_builder>` didn't reset JOIN cache for write-type queries.
 -  Fixed a bug (#2298) - :doc:`Database Results <database/results>` method ``next_row()`` kept returning the last row, allowing for infinite loops.
--  Fixed a bug (#2236) - :doc:`Form Helper <helpers/form_helper>` function ``set_value()`` didn't parse array notation for keys if the rule was not present in the :doc:`Form Validation Library <libraries/form_validation>`.
+-  Fixed a bug (#2236, #2639) - :doc:`Form Helper <helpers/form_helper>` functions :func:`set_value()`, :func:`set_select()`, :func:`set_radio()`, :func:`set_checkbox()` didn't parse array notation for keys if the rule was not present in the :doc:`Form Validation Library <libraries/form_validation>`.
 -  Fixed a bug (#2353) - :doc:`Query Builder <database/query_builder>` erroneously prefixed literal strings with **dbprefix**.
 -  Fixed a bug (#78) - :doc:`Cart Library <libraries/cart>` didn't allow non-English letters in product names.
 -  Fixed a bug (#77) - :doc:`Database Class <database/index>` didn't properly handle the transaction "test mode" flag.
@@ -600,7 +605,7 @@
 -  Fixed a bug (#2388) - :doc:`Email Library <libraries/email>` used to ignore attachment errors, resulting in broken emails being sent.
 -  Fixed a bug (#2498) - :doc:`Form Validation Library <libraries/form_validation>` rule **valid_base64** only checked characters instead of actual validity.
 -  Fixed a bug (#2425) - OCI8 :doc:`database <database>` driver's method ``stored_procedure()`` didn't log an error unless **db_debug** was set to TRUE.
--  Fixed a bug (#2490) - :doc:`Database Class <database/queries>` method ``query()`` returning boolean instead of a result object for PostgreSQL-specific *INSERT INTO ... RETURNING* statements.
+-  Fixed a bug (#2490) - :doc:`Database Class <database/queries>` method ``query()`` returning boolean instead of a result object when the PostgreSQL-specific *RETURNING* clause is used.
 -  Fixed a bug (#249) - :doc:`Cache Library <libraries/caching>` didn't properly handle Memcache(d) configurations with missing options.
 -  Fixed a bug (#180) - :php:func:`config_item()` didn't take into account run-time configuration changes.
 -  Fixed a bug (#2551) - :doc:`Loader Library <libraries/loader>` method ``library()`` didn't properly check if a class that is being loaded already exists.
@@ -608,6 +613,9 @@
 -  Fixed a bug (#2585) - :doc:`Query Builder <database/query_builder>` methods ``min()``, ``max()``, ``avg()``, ``sum()`` didn't escape field names.
 -  Fixed an edge case (#2583) in the :doc:`Email Library <libraries/email>` where `Suhosin <http://www.hardened-php.net/suhosin/>` blocked messages sent via ``mail()`` due to trailing newspaces in headers.
 -  Fixed a bug (#2590) - :php:func:`log_message()` didn't actually cache the ``CI_Log`` class instance.
+-  Fixed a bug (#2609) - :php:func:`get_config()` optional argument was only effective on first function call. Also, it can now add items, in addition to updating existing items.
+-  Fixed a bug in the 'postgre' :doc:`database <database/index>` driver where the connection ID wasn't passed to ``pg_escape_string()``.
+-  Fixed a bug (#33) - Script execution was terminated when an invalid cookie key was encountered.
 
 Version 2.1.4
 =============
@@ -764,7 +772,6 @@
    but the requested method did not.
 -  Fixed a bug (Reactor #89) where MySQL export would fail if the table
    had hyphens or other non alphanumeric/underscore characters.
--  Fixed a bug (#200) where MySQL queries would be malformed after calling $this->db->count_all() then $this->db->get()
 -  Fixed a bug (#105) that stopped query errors from being logged unless database debugging was enabled
 -  Fixed a bug (#160) - Removed unneeded array copy in the file cache
    driver.
@@ -785,7 +792,7 @@
 -  Fixed a bug (#537) - Support for all wav type in browser.
 -  Fixed a bug (#576) - Using ini_get() function to detect if apc is enabled or not.
 -  Fixed invalid date time format in :doc:`Date helper <helpers/date_helper>` and :doc:`XMLRPC library <libraries/xmlrpc>`.
--  Fixed a bug (#200) - MySQL queries would be malformed after calling count_all() then db->get().
+-  Fixed a bug (#200) - MySQL queries would be malformed after calling db->count_all() then db->get().
 
 Version 2.0.3
 =============
diff --git a/user_guide_src/source/general/common_functions.rst b/user_guide_src/source/general/common_functions.rst
index 32e8a8b..e085ef8 100644
--- a/user_guide_src/source/general/common_functions.rst
+++ b/user_guide_src/source/general/common_functions.rst
@@ -96,11 +96,10 @@
 log_message()
 =============
 
-.. php:function:: log_message($level, $message, $php_error = FALSE)
+.. php:function:: log_message($level, $message)
 
 	:param	string	$level: Log level: 'error', 'debug' or 'info'
 	:param	string	$message: Message to log
-	:param	bool	$php_error: Whether we're logging a native PHP error message
 	:returns:	void
 
 This function is an alias for ``CI_Log::write_log()``. For more info,
diff --git a/user_guide_src/source/libraries/form_validation.rst b/user_guide_src/source/libraries/form_validation.rst
index 8b35fdc..8534175 100644
--- a/user_guide_src/source/libraries/form_validation.rst
+++ b/user_guide_src/source/libraries/form_validation.rst
@@ -431,7 +431,7 @@
 			}
 		}
 
-		protected function username_check($str)
+		public function username_check($str)
 		{
 			if ($str == 'test')
 			{
@@ -866,6 +866,7 @@
 **is_unique**             Yes        Returns FALSE if the form element is not unique to the table and field name in the            is_unique[table.field] 
                                      parameter. Note: This rule requires :doc:`Query Builder <../database/query_builder>` to be                             
                                      enabled in order to work.
+**min_length**            Yes        Returns FALSE if the form element is shorter then the parameter value.                        min_length[3]         
 **max_length**            Yes        Returns FALSE if the form element is longer then the parameter value.                         max_length[12]         
 **exact_length**          Yes        Returns FALSE if the form element is not exactly the parameter value.                         exact_length[8]        
 **greater_than**          Yes        Returns FALSE if the form element is less than or equal to the parameter value or not         greater_than[8]