Index: wp-admin/admin.php
===================================================================
--- wp-admin/admin.php	(revision 8313)
+++ wp-admin/admin.php	(working copy)
@@ -113,4 +113,7 @@
 	do_action("load-$pagenow");
 }
 
+if ( !empty($_REQUEST['action']) )
+	do_action('admin_post_' . $_REQUEST['action']);
+
 ?>