=== modified file 'openid.module'
--- openid.module	2009-03-18 16:34:30 +0000
+++ openid.module	2009-07-12 14:17:19 +0000
@@ -136,7 +136,7 @@
 function openid_login_validate($form, &$form_state) {
   $return_to = $form_state['values']['openid.return_to'];
   if (empty($return_to)) {
-    $return_to = url('', array('absolute' => TRUE));
+    $return_to = 'http://' . $_SERVER['HTTP_HOST'];
   }
 
   openid_begin($form_state['values']['openid_identifier'], $return_to, $form_state['values']);
@@ -483,7 +483,7 @@
     $request['openid.realm'] = url('', array('absolute' => TRUE));
   }
   else {
-    $request['openid.trust_root'] = url('', array('absolute' => TRUE));
+    $request['openid.trust_root'] = 'http://' . $_SERVER['HTTP_HOST'];
   }
 
   // Simple Registration