Index: securepages.module
===================================================================
--- securepages.module	(revision 630)
+++ securepages.module	(working copy)
@@ -120,7 +120,7 @@
  * Implementation of hook_form_alter()
  */
 function securepages_form_alter($form_id, &$form) {
-  if (!variable_get('securepages_enable', 0)) {
+  if (!variable_get('securepages_enable', 0) || $_SERVER['SCRIPT_NAME'] != '/index.php') {
     return;
   }