Index: src/wp-includes/js/wp-lists.js
===================================================================
--- src/wp-includes/js/wp-lists.js	(revision 38048)
+++ src/wp-includes/js/wp-lists.js	(working copy)
@@ -297,7 +297,16 @@
 			res = wpAjax.parseAjaxResponse(r, s.response, s.element);
 			rres = r;
 
-			if ( 'undefined' !== typeof res.responses[0].supplemental.comment_link ) {
+			if ( true === res ) {
+				return true;
+			}
+
+			if ( !res || res.errors ) {
+				element.stop().stop().css( 'backgroundColor', '#FF3333' )[isClass?'removeClass':'addClass'](s.dimClass).show().queue( function() { list.wpList.recolor(); $(this).dequeue(); } );
+				return false;
+			}
+
+			if ( 'undefined' !== typeof res.responses && 'undefined' !== typeof res.responses[0].supplemental.comment_link ) {
 				var submittedOn = element.find( '.submitted-on' ),
 					commentLink = submittedOn.find( 'a' );
 
@@ -310,11 +319,6 @@
 					submittedOn.text( commentLink.text() );
 				}
 			}
-
-			if ( !res || res.errors ) {
-				element.stop().stop().css( 'backgroundColor', '#FF3333' )[isClass?'removeClass':'addClass'](s.dimClass).show().queue( function() { list.wpList.recolor(); $(this).dequeue(); } );
-				return false;
-			}
 		};
 
 		s.complete = function(x, st) {