Index: branches/5.2.x/core/kernel/application.php
===================================================================
diff -u -N -r15608 -r15616
--- branches/5.2.x/core/kernel/application.php	(.../application.php)	(revision 15608)
+++ branches/5.2.x/core/kernel/application.php	(.../application.php)	(revision 15616)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: application.php 15608 2012-11-06 17:21:28Z alex $
+* @version	$Id: application.php 15616 2012-11-07 13:50:29Z alex $
 * @package	In-Portal
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -346,7 +346,7 @@
 		$site_timezone = $this->ConfigValue('Config_Site_Time');
 
 		if ( $site_timezone ) {
-			putenv('TZ=' . $site_timezone);
+			date_default_timezone_set($site_timezone);
 		}
 
 		if ( defined('DEBUG_MODE') && $this->isDebugMode() ) {
@@ -2006,7 +2006,7 @@
 		$user_timezone = $this->Session->GetField('TimeZone');
 
 		if ( $user_timezone ) {
-			putenv('TZ=' . $user_timezone);
+			date_default_timezone_set($user_timezone);
 		}
 	}