Index: modules/system/system.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/system/system.module,v
retrieving revision 1.940
diff -u -p -r1.940 system.module
--- modules/system/system.module	24 Jun 2010 17:28:10 -0000	1.940
+++ modules/system/system.module	25 Jun 2010 12:18:42 -0000
@@ -1216,6 +1216,11 @@ function system_library() {
     ),
     'dependencies' => array(
       array('system', 'ui.widget'),
+      array('system', 'ui.button'),
+      array('system', 'ui.draggable'),
+      array('system', 'ui.mouse'),
+      array('system', 'ui.position'),
+      array('system', 'ui.resizable'),
     ),
   );
   $libraries['ui.draggable'] = array(