--- pingback.module	2009-03-05 06:33:19.000000000 +0000
+++ pingback.module	2009-03-19 15:47:22.000000000 +0000
@@ -51,7 +60,7 @@ function pingback_form_alter(&$form, &$f
       $past_successes_listing = array();
       $q = db_query('SELECT url FROM {pingback_sent} WHERE nid = %d', $node->nid);
       while ($pb = db_fetch_object($q)) {
-        $past_successes_listing[] = $pb->url;
+        $past_successes_listing[] = l($pb->url,$pb->url);
       }
       // Add listing of successfully pingbacked URLs.
       if (count($past_successes_listing)) {