Index: wp-admin/includes/template.php
===================================================================
--- wp-admin/includes/template.php	(revision 7086)
+++ wp-admin/includes/template.php	(working copy)
@@ -606,11 +606,11 @@
 	$author_url_display = $author_url;
 	if ( strlen($author_url_display) > 50 )
 		$author_url_display = substr($author_url_display, 0, 49) . '...';
-	$ptime = get_post_time('G', true);
-	if ( ( abs(time() - $ptime) ) < 86400 )
-		$ptime = sprintf( __('%s ago'), human_time_diff( $ptime ) );
+	$hours = mysql2date('G', $comment->comment_date_gmt);
+	if ( ( abs(time() - $hours) ) < 86400 )
+		$ptime = sprintf( __('%s ago'), human_time_diff( $hours ) );
 	else
-		$ptime = mysql2date(__('Y/m/d \a\t g:i A'), $post->post_date);
+		$ptime = mysql2date(__('Y/m/d \a\t g:i A'), $comment->comment_date);
 
 	$delete_url  = clean_url( wp_nonce_url( "comment.php?action=deletecomment&p=$comment->comment_post_ID&c=$comment->comment_ID", "delete-comment_$comment->comment_ID" ) );
 	$approve_url = clean_url( wp_nonce_url( "comment.php?action=approvecomment&p=$comment->comment_post_ID&c=$comment->comment_ID", "approve-comment_$comment->comment_ID" ) );