Index: wp-admin/includes/template.php
===================================================================
--- wp-admin/includes/template.php	(revision 11001)
+++ wp-admin/includes/template.php	(working copy)
@@ -2077,7 +2077,7 @@
 		$author_url_display = substr($author_url_display, 0, 49) . '...';
 
 	$ptime = date('G', strtotime( $comment->comment_date ) );
-	if ( ( abs(time() - $ptime) ) < 86400 )
+	if ( ( abs(current_time('timestamp') - $ptime) ) < 86400 )
 		$ptime = sprintf( __('%s ago'), human_time_diff( $ptime ) );
 	else
 		$ptime = mysql2date(__('Y/m/d \a\t g:i A'), $comment->comment_date );