Index: wp-includes/nav-menu.php
===================================================================
--- wp-includes/nav-menu.php	(revision 20239)
+++ wp-includes/nav-menu.php	(working copy)
@@ -252,7 +252,7 @@
 	if ( is_wp_error( $update_response ) )
 		return $update_response;
 
-	do_action( 'wp_update_nav_menu', $menu_id, $menu_data );
+	do_action( 'wp_update_nav_menu_object', $menu_id, $menu_data );
 	return $menu_id;
 }
 
@@ -781,4 +781,6 @@
 		}
 		wp_update_nav_menu_item( $menu_id, 0, $args );
 	}
+
+	do_action( 'wp_update_nav_menu', $menu_id );
 }