added is_really_writable() to Common.php, replaced is_writable() throughout application with is_really_writable()
diff --git a/system/libraries/Log.php b/system/libraries/Log.php
index 011bdbf..f9ca85a 100644
--- a/system/libraries/Log.php
+++ b/system/libraries/Log.php
@@ -46,7 +46,7 @@
 		

 		$this->log_path = ($config['log_path'] != '') ? $config['log_path'] : BASEPATH.'logs/';

 		

-		if ( ! is_dir($this->log_path) OR ! is_writable($this->log_path))

+		if ( ! is_dir($this->log_path) OR ! is_really_writable($this->log_path))

 		{

 			$this->_enabled = FALSE;

 		}