Disable layout/view on the login validation page.

application/modules/auth/controllers/IndexController.php

@@ -34,6 +34,8 @@ class Auth_IndexController extends App_Controller_Action {
 	
 	public function validateAction()
 	{
+	    $this->_disableLayoutAndView();
+	    
 		$username = $this->getRequest()->getParam('username');
 		$password = $this->getRequest()->getParam('password');