Index: data/includes/common.inc
===================================================================
--- data/includes/common.inc    (revision 247)
+++ data/includes/common.inc    (working copy)
@@ -318,6 +318,9 @@

   header('Location: '. $url, TRUE, $http_response_code);

+  //Make sure the header is output to the client before exiting
+  flush();
+
   // The "Location" header sends a redirect status code to the HTTP daemon. In
   // some cases this can be wrong, so we make sure none of the code below the
   // drupal_goto() call gets executed upon redirection.