It seemed to make sense to me that the HeadTitle helper should be doing translation when it's cast to string, and it was pretty trivial to implement. Thoughts?

Index: HeadTitle.php
===================================================================
--- HeadTitle.php   (revision 9303)
+++ HeadTitle.php   (working copy)
@@ -19,6 +19,9 @@
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 
+/** Zend_Registry */
+require_once 'Zend/Registry.php';
+
 /** Zend_View_Helper_Placeholder_Container_Standalone */
 require_once 'Zend/View/Helper/Placeholder/Container/Standalone.php';
 
@@ -65,18 +68,28 @@
     /**
      * Turn helper into string
      * 
-     * @param  string|null $indent 
+     * @param  string|null $indent
+     * @param  string|null $locale
      * @return string
      */
-    public function toString($indent = null)
+    public function toString($indent = null, $locale = null)
     {
         $indent = (null !== $indent)
                 ? $this->getWhitespace($indent)
                 : $this->getIndent();
 
         $items = array();
-        foreach ($this as $item) {
-            $items[] = $this->_escape($item);
+
+        if(Zend_Registry::isRegistered('Zend_Translate')) {
+            $translator = Zend_Registry::get('Zend_Translate');
+
+            foreach ($this as $item) {
+                $items[] = $this->_escape($translator->translate($item, $locale));
+            }
+        } else {
+            foreach ($this as $item) {
+                $items[] = $this->_escape($item);
+            }
         }
 
         $separator = $this->_escape($this->getSeparator());