diff --git a/system/database/DB_active_rec.php b/system/database/DB_active_rec.php
index 37d162b..7162e2a 100644
--- a/system/database/DB_active_rec.php
+++ b/system/database/DB_active_rec.php
@@ -872,11 +872,11 @@
 	 * @param	integer	the offset value
 	 * @return	object
 	 */
-	public function limit($value, $offset = '')
+	public function limit($value, $offset = NULL)
 	{
 		$this->ar_limit = (int) $value;
 
-		if ($offset != '')
+		if ( ! is_null($offset))
 		{
 			$this->ar_offset = (int) $offset;
 		}
@@ -894,7 +894,7 @@
 	 */
 	public function offset($offset)
 	{
-		$this->ar_offset = $offset;
+		$this->ar_offset = (int) $offset;
 		return $this;
 	}
 
diff --git a/system/helpers/string_helper.php b/system/helpers/string_helper.php
index 9fa69f4..dd8ffad 100644
--- a/system/helpers/string_helper.php
+++ b/system/helpers/string_helper.php
@@ -215,12 +215,9 @@
 						case 'nozero'	:	$pool = '123456789';
 							break;
 					}
-
-					$str = '';
-					for ($i=0; $i < $len; $i++)
-					{
-						$str .= substr($pool, mt_rand(0, strlen($pool) -1), 1);
-					}
+					
+					$str = substr(str_shuffle(str_repeat($pool, ceil($len/strlen($pool)))),0,$len);
+					
 					return $str;
 				break;
 			case 'unique'	:
diff --git a/system/language/english/migration_lang.php b/system/language/english/migration_lang.php
index 4763ca2..94cb882 100644
--- a/system/language/english/migration_lang.php
+++ b/system/language/english/migration_lang.php
@@ -5,7 +5,7 @@
 $lang['migration_multiple_version']		= "This are multiple migrations with the same version number: %d.";
 $lang['migration_class_doesnt_exist']	= "The migration class \"%s\" could not be found.";
 $lang['migration_missing_up_method']	= "The migration class \"%s\" is missing an 'up' method.";
-$lang['migration_missing_down_method']	= "The migration class \"%s\" is missing an 'up' method.";
+$lang['migration_missing_down_method']	= "The migration class \"%s\" is missing a 'down' method.";
 $lang['migration_invalid_filename']		= "Migration \"%s\" has an invalid filename.";
 
 
diff --git a/system/libraries/Profiler.php b/system/libraries/Profiler.php
index 330acce..ac58129 100644
--- a/system/libraries/Profiler.php
+++ b/system/libraries/Profiler.php
@@ -506,7 +506,7 @@
 
 		foreach ($this->CI->session->all_userdata() as $key => $val)
 		{
-			if (is_array($val))
+			if (is_array($val) || is_object($val))
 			{
 				$val = print_r($val, TRUE);
 			}
diff --git a/system/libraries/Session/drivers/Session_cookie.php b/system/libraries/Session/drivers/Session_cookie.php
index 334218e..696105b 100755
--- a/system/libraries/Session/drivers/Session_cookie.php
+++ b/system/libraries/Session/drivers/Session_cookie.php
@@ -28,21 +28,22 @@
  */
 class CI_Session_cookie extends CI_Session_driver {
 	protected $sess_encrypt_cookie	= FALSE;
-	protected $sess_use_database		= FALSE;
+	protected $sess_use_database	= FALSE;
 	protected $sess_table_name		= '';
 	protected $sess_expiration		= 7200;
 	protected $sess_expire_on_close	= FALSE;
-	protected $sess_match_ip			= FALSE;
+	protected $sess_match_ip		= FALSE;
 	protected $sess_match_useragent	= TRUE;
 	protected $sess_cookie_name		= 'ci_session';
-	protected $cookie_prefix			= '';
+	protected $cookie_prefix		= '';
 	protected $cookie_path			= '';
-	protected $cookie_domain			= '';
+	protected $cookie_domain		= '';
+	protected $cookie_secure		= FALSE;
 	protected $sess_time_to_update	= 300;
-	protected $encryption_key		 	= '';
-	protected $time_reference		 	= 'time';
+	protected $encryption_key	 	= '';
+	protected $time_reference	 	= 'time';
 	protected $userdata				= array();
-	protected $CI					 	= null;
+	protected $CI				 	= null;
 	protected $now					= 0;
 
 	const gc_probability			= 5;
@@ -62,7 +63,8 @@
 		// manually via the $params array above or via the config file
 		foreach (array('sess_encrypt_cookie', 'sess_use_database', 'sess_table_name', 'sess_expiration',
 		'sess_expire_on_close', 'sess_match_ip', 'sess_match_useragent', 'sess_cookie_name', 'cookie_path',
-		'cookie_domain', 'sess_time_to_update', 'time_reference', 'cookie_prefix', 'encryption_key') as $key)
+		'cookie_domain', 'cookie_secure', 'sess_time_to_update', 'time_reference', 'cookie_prefix', 'encryption_key')
+		as $key)
 		{
 			$this->$key = (isset($this->parent->params[$key])) ? $this->parent->params[$key] : $this->CI->config->item($key);
 		}
@@ -482,7 +484,8 @@
 		$expire = ($this->sess_expire_on_close === TRUE) ? 0 : $this->sess_expiration + time();
 
 		// Set the cookie
-		setcookie($this->sess_cookie_name, $cookie_data, $expire, $this->cookie_path, $this->cookie_domain, 0);
+		setcookie($this->sess_cookie_name, $cookie_data, $expire, $this->cookie_path, $this->cookie_domain,
+			$this->cookie_secure);
 	}
 
 	/**
diff --git a/system/libraries/Session/drivers/Session_native.php b/system/libraries/Session/drivers/Session_native.php
index c7130b6..09fb7f9 100755
--- a/system/libraries/Session/drivers/Session_native.php
+++ b/system/libraries/Session/drivers/Session_native.php
@@ -22,7 +22,7 @@
  * @package		CodeIgniter
  * @subpackage	Libraries
  * @category	Sessions
- * @author		ExpressionEngine	Dev Team
+ * @author		ExpressionEngine Dev Team
  */
 class CI_Session_native extends CI_Session_driver {
 	/**