Index: branches/RC/core/units/general/main_event_handler.php
===================================================================
diff -u -r8929 -r10098
--- branches/RC/core/units/general/main_event_handler.php	(.../main_event_handler.php)	(revision 8929)
+++ branches/RC/core/units/general/main_event_handler.php	(.../main_event_handler.php)	(revision 10098)
@@ -122,7 +122,7 @@
 			}
 
 			// remove template from url if it is category index cached template
-			if ($template == $category_template || strtolower($template) == '__default__') {
+			if ($template == $category_template || mb_strtolower($template) == '__default__') {
 				$template = '';
 			}
 
@@ -132,7 +132,7 @@
 			unset($url_params['t']);
 
 			$event->setEventParam('url_params', $url_params);
-			$event->setEventParam('env_string', strtolower($ret) );
+			$event->setEventParam('env_string', mb_strtolower($ret) );
 		}
 	}