--- system.admin.inc	2009-06-09 12:58:09.000000000 +0200
+++ system.admin.inc.new	2009-07-21 00:27:49.000000000 +0200
@@ -1357,7 +1357,7 @@
  *
  * @ingroup forms
  */
-function system_clear_cache_submit($form, &$form_state) {
+function system_clear_cache_submit(&$form_state, $form) {
   drupal_flush_all_caches();
   drupal_set_message(t('Caches cleared.'));
 }