Index: includes/menu.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/menu.inc,v
retrieving revision 1.364
diff -u -p -r1.364 menu.inc
--- includes/menu.inc	3 Dec 2009 20:21:50 -0000	1.364
+++ includes/menu.inc	4 Dec 2009 04:31:01 -0000
@@ -3180,7 +3180,7 @@ function _menu_router_build($callbacks) 
  */
 function _menu_router_save($menu, $masks) {
   // Delete the existing router since we have some data to replace it.
-  db_delete('menu_router')->execute();
+  db_truncate('menu_router');
 
   // Prepare insert object.
   $insert = db_insert('menu_router')