Index: modules/comment/comment.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/comment/comment.module,v
retrieving revision 1.494
diff -u -p -r1.494 comment.module
--- modules/comment/comment.module      24 Oct 2006 20:31:25 -0000      1.494
+++ modules/comment/comment.module      24 Oct 2006 21:35:03 -0000
@@ -184,7 +184,9 @@ function theme_comment_block() {
   while ($comment = db_fetch_object($result)) {
     $items[] = l($comment->subject, 'node/'. $comment->nid, NULL, NULL, 'comment-'. $comment->cid) .'<br />'. t('@time ago', array('@time' => format_interval(time() - $comment->timestamp)));
   }
-  return theme('item_list', $items);
+  if ($items) {
+    return theme('item_list', $items);
+  }
 }

 /**