--- comment.module.orig	2006-02-25 11:39:10.000000000 +0100
+++ comment.module	2006-02-25 11:40:42.000000000 +0100
@@ -206,7 +206,9 @@ function comment_link($type, $node = 0, 
               $links[] = l(t('add new comment'), "comment/reply/$node->nid", array('title' => t('Add a new comment to this page.')));
             }
             else {
-              $links[] = theme('comment_post_forbidden', $node->nid);
+              $post_forbidden_link = theme('comment_post_forbidden', $node->nid);
+              if($post_forbidden_link)
+                $links[] = $post_forbidden_link;
             }
           }
         }