--- D:/install/drupal/6.x/modules/webform/2009-01-16-2.6/webform/_patch/webform.module	Sat Feb 14 09:18:14 2009
+++ D:/install/drupal/6.x/modules/webform/2009-01-16-2.6/webform/_patch/webform_new.module	Thu Feb 26 10:27:34 2009
@@ -1098,7 +1098,7 @@
   }
 
   // Check if the user can add another submission.
-  if ($node->webform['submit_limit'] != -1) { // -1: Submissions are never throttled.
+  if (!empty($node->webform['submit_limit']) && $node->webform['submit_limit'] != -1) { // -1: Submissions are never throttled.
     module_load_include('inc', 'webform', 'webform_submissions');
 
     if ($limit_exceeded = _webform_submission_limit_check($node)) {