Index: includes/common.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/common.inc,v
retrieving revision 1.768
diff -u -p -r1.768 common.inc
--- includes/common.inc	16 May 2008 01:23:31 -0000	1.768
+++ includes/common.inc	23 May 2008 17:23:43 -0000
@@ -1435,7 +1435,7 @@ function l($text, $path, $options = arra
     );
 
   // Append active class.
-  if ($path == $_GET['q'] || ($path == '<front>' && drupal_is_front_page())) {
+  if (url($path, $options) == url($_GET['q']) || ($path == '<front>' && drupal_is_front_page())) {
     if (isset($options['attributes']['class'])) {
       $options['attributes']['class'] .= ' active';
     }