Magento Login Error after 1.3.0 upgrade fix

\app\code\core\Mage\Adminhtml\Model\System\Config\Backend\Admin\Usesecretkey.php
\app\code\core\Mage\Adminhtml\Model\Url.php

Index: app/code/core/Mage/Adminhtml/Model/System/Config/Backend/Admin/Usesecretkey.php
===================================================================
--- app/code/core/Mage/Adminhtml/Model/System/Config/Backend/Admin/Usesecretkey.php	(revision 0)
+++ app/code/core/Mage/Adminhtml/Model/System/Config/Backend/Admin/Usesecretkey.php	(revision 37005)
@@ -0,0 +1,42 @@
+<?php
+/**
+ * Magento
+ *
+ * NOTICE OF LICENSE
+ *
+ * This source file is subject to the Open Software License (OSL 3.0)
+ * that is bundled with this package in the file LICENSE.txt.
+ * It is also available through the world-wide-web at this URL:
+ * http://opensource.org/licenses/osl-3.0.php
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to license@magentocommerce.com so we can send you a copy immediately.
+ *
+ * DISCLAIMER
+ *
+ * Do not edit or add to this file if you wish to upgrade Magento to newer
+ * versions in the future. If you wish to customize Magento for your
+ * needs please refer to http://www.magentocommerce.com for more information.
+ *
+ * @category   Mage
+ * @package    Mage_Adminhtml
+ * @copyright  Copyright (c) 2008 Irubin Consulting Inc. DBA Varien (http://www.varien.com)
+ * @license    http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
+ */
+
+
+/**
+ * Adminhtml backend model for "Use secret key in Urls" option
+ *
+ * @category   Mage
+ * @package    Mage_Adminhtml
+ * @author     Magento Core Team <core@magentocommerce.com>
+ */
+class Mage_Adminhtml_Model_System_Config_Backend_Admin_Usesecretkey extends Mage_Core_Model_Config_Data
+{
+    protected function _afterSave()
+    {
+        Mage::getSingleton('adminhtml/url')->renewSecretUrls();
+        return $this;
+    }
+}