diff -r 5e7a0fedabdf -r 877f952ae2bd web/lib/Zend/Controller/Action/Helper/ViewRenderer.php
--- a/web/lib/Zend/Controller/Action/Helper/ViewRenderer.php	Thu Mar 21 17:31:31 2013 +0100
+++ b/web/lib/Zend/Controller/Action/Helper/ViewRenderer.php	Thu Mar 21 19:50:53 2013 +0100
@@ -15,9 +15,9 @@
  * @category   Zend
  * @package    Zend_Controller
  * @subpackage Zend_Controller_Action_Helper
- * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @copyright  Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
- * @version    $Id: ViewRenderer.php 20261 2010-01-13 18:55:25Z matthew $
+ * @version    $Id: ViewRenderer.php 24593 2012-01-05 20:35:02Z matthew $
  */
 
 /**
@@ -68,7 +68,7 @@
  * @uses       Zend_Controller_Action_Helper_Abstract
  * @package    Zend_Controller
  * @subpackage Zend_Controller_Action_Helper
- * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @copyright  Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 class Zend_Controller_Action_Helper_ViewRenderer extends Zend_Controller_Action_Helper_Abstract
@@ -626,6 +626,9 @@
         } elseif (null !== $action) {
             $vars['action'] = $action;
         }
+        
+        $replacePattern = array('/[^a-z0-9]+$/i', '/^[^a-z0-9]+/i');
+        $vars['action'] = preg_replace($replacePattern, '', $vars['action']);
 
         $inflector = $this->getInflector();
         if ($this->getNoController() || $this->getNeverController()) {