Index: includes/menu.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/menu.inc,v
retrieving revision 1.428
diff -u -r1.428 menu.inc
--- includes/menu.inc	8 Dec 2010 06:48:39 -0000	1.428
+++ includes/menu.inc	14 Dec 2010 04:12:39 -0000
@@ -2155,11 +2155,13 @@
  * Returns a renderable element for the primary and secondary tabs.
  */
 function menu_local_tabs() {
-  return array(
-    '#theme' => 'menu_local_tasks',
-    '#primary' => menu_primary_local_tasks(),
-    '#secondary' => menu_secondary_local_tasks(),
-  );
+  if (menu_primary_local_tasks() || menu_secondary_local_tasks()) {
+    return array(
+      '#theme' => 'menu_local_tasks',
+      '#primary' => menu_primary_local_tasks(),
+      '#secondary' => menu_secondary_local_tasks(),
+    );
+  }
 }
 
 /**