Index: modules/comment/comment.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/comment/comment.module,v
retrieving revision 1.887
diff -u -p -F '^f' -r1.887 comment.module
--- modules/comment/comment.module	30 Jul 2010 02:50:37 -0000	1.887
+++ modules/comment/comment.module	7 Aug 2010 19:11:17 -0000
@@ -587,7 +587,7 @@ function theme_comment_block() {
   $items = array();
   $number = variable_get('comment_block_count', 10);
   foreach (comment_get_recent($number) as $comment) {
-    $items[] = l($comment->subject, 'comment/' . $comment->cid, array('fragment' => 'comment-' . $comment->cid)) .'<span>'. t('@time ago', array('@time' => format_interval(REQUEST_TIME - $comment->changed))) .'</span>';
+    $items[] = l($comment->subject, 'comment/' . $comment->cid, array('fragment' => 'comment-' . $comment->cid)) . '&nbsp;<abbr class="date" title="' .  date('c', $comment->changed) . '">' . t('@time ago', array('@time' => format_interval(REQUEST_TIME - $comment->changed))) . '</abbr>';
   }
 
   if ($items) {