=== modified file 'modules/comment/comment.module'
--- modules/comment/comment.module	
+++ modules/comment/comment.module	
@@ -173,9 +173,10 @@ function comment_block($op = 'list', $de
     return $blocks;
   }
   else if ($op == 'view' && user_access('access comments')) {
-    $block['subject'] = t('Recent comments');
-    $block['content'] = theme('comment_block');
-    return $block;
+    if ($block['content'] = theme('comment_block')) {
+      $block['subject'] = t('Recent comments');
+      return $block;
+    }
   }
 }
 
@@ -185,7 +186,9 @@ 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);
+  }
 }
 
 /**
=== modified file 'modules/system/system.css'
--- modules/system/system.css	
+++ modules/system/system.css	
@@ -281,8 +281,9 @@ html.js fieldset.collapsible legend a {
   width: 95%;
 }
 .resizable-textarea .grippie {
-  height: 14px;
-  background: #eee url(../../misc/grippie.png) no-repeat 100% 100%;
+  height: 5px;
+  font-size: 0;
+  background: #eee url(../../misc/grippie.png) no-repeat 50% 1px;
   border: 1px solid #ddd;
   border-top-width: 0;
   cursor: s-resize;