Index: wp-includes/meta.php
===================================================================
--- wp-includes/meta.php	(revision 12168)
+++ wp-includes/meta.php	(working copy)
@@ -38,7 +38,7 @@
 
 	wp_cache_delete($object_id, $meta_type . '_meta');
 
-	do_action( "added_{$meta_type}_meta", $wpdb->insert_id, $object_id, $meta_key, $meta_value );
+	do_action( "added_{$meta_type}_meta", $object_id, $meta_key, $meta_value, $wpdb->insert_id );
 
 	return true;
 }