Index: includes/menu.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/menu.inc,v
retrieving revision 1.362
diff -u -p -r1.362 menu.inc
--- includes/menu.inc	11 Nov 2009 08:28:50 -0000	1.362
+++ includes/menu.inc	28 Nov 2009 19:21:02 -0000
@@ -1667,6 +1667,11 @@ function menu_local_tasks($level = 0) {
     $root_path = $router_item['path'];
 
     foreach ($result as $item) {
+      // Do not invoke title callbacks for local tasks and actions. To output
+      // dynamic local task titles, modules can implement
+      // hook_menu_local_tasks_alter().
+      $item['title_callback'] = 't';
+      $item['title_arguments'] = array();
       _menu_translate($item, $map, TRUE);
       if ($item['tab_parent']) {
         // All tabs, but not the root page.