diff -r 5e7a0fedabdf -r 877f952ae2bd web/lib/Zend/Form/Element/Captcha.php
--- a/web/lib/Zend/Form/Element/Captcha.php	Thu Mar 21 17:31:31 2013 +0100
+++ b/web/lib/Zend/Form/Element/Captcha.php	Thu Mar 21 19:50:53 2013 +0100
@@ -15,9 +15,9 @@
  * @category   Zend
  * @package    Zend_Form
  * @subpackage Element
- * @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: Captcha.php 22328 2010-05-30 15:09:06Z bittarman $
+ * @version    $Id: Captcha.php 24848 2012-05-31 19:28:48Z rob $
  */
 
 /** @see Zend_Form_Element_Xhtml */
@@ -38,7 +38,7 @@
  * @category   Zend
  * @package    Zend_Form
  * @subpackage Element
- * @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_Form_Element_Captcha extends Zend_Form_Element_Xhtml
@@ -127,24 +127,6 @@
     }
 
     /**
-     * Return all attributes
-     *
-     * @return array
-     */
-    public function getAttribs()
-    {
-        $attribs = get_object_vars($this);
-        unset($attribs['helper']);
-        foreach ($attribs as $key => $value) {
-            if ('_' == substr($key, 0, 1)) {
-                unset($attribs[$key]);
-            }
-        }
-
-        return $attribs;
-    }
-
-    /**
      * Set options
      *
      * Overrides to allow passing captcha options
@@ -154,16 +136,22 @@
      */
     public function setOptions(array $options)
     {
+        $captcha        = null;
+        $captchaOptions = array();
+
         if (array_key_exists('captcha', $options)) {
+            $captcha = $options['captcha'];
             if (array_key_exists('captchaOptions', $options)) {
-                $this->setCaptcha($options['captcha'], $options['captchaOptions']);
+                $captchaOptions = $options['captchaOptions'];
                 unset($options['captchaOptions']);
-            } else {
-                $this->setCaptcha($options['captcha']);
             }
             unset($options['captcha']);
         }
         parent::setOptions($options);
+
+        if(null !== $captcha) {
+            $this->setCaptcha($captcha, $captchaOptions);
+        }
         return $this;
     }
 
@@ -178,18 +166,25 @@
         $captcha    = $this->getCaptcha();
         $captcha->setName($this->getFullyQualifiedName());
 
-        $decorators = $this->getDecorators();
+        if (!$this->loadDefaultDecoratorsIsDisabled()) {
+            $decorators = $this->getDecorators();
+            $decorator  = $captcha->getDecorator();
+            $key        = get_class($this->_getDecorator($decorator, null));
+
+            if (!empty($decorator) && !array_key_exists($key, $decorators)) {
+                array_unshift($decorators, $decorator);
+            }
 
-        $decorator  = $captcha->getDecorator();
-        if (!empty($decorator)) {
-            array_unshift($decorators, $decorator);
+            $decorator = array('Captcha', array('captcha' => $captcha));
+            $key       = get_class($this->_getDecorator($decorator[0], $decorator[1]));
+
+            if ($captcha instanceof Zend_Captcha_Word && !array_key_exists($key, $decorators)) {
+                array_unshift($decorators, $decorator);
+            }
+
+            $this->setDecorators($decorators);
         }
 
-        $decorator = array('Captcha', array('captcha' => $captcha));
-        array_unshift($decorators, $decorator);
-
-        $this->setDecorators($decorators);
-
         $this->setValue($this->getCaptcha()->generate());
 
         return parent::render($view);
@@ -237,7 +232,8 @@
         switch ($type) {
             case null:
                 $loader = $this->getPluginLoader(self::CAPTCHA);
-                $cPrefix = rtrim($prefix, '_') . '_Captcha';
+                $nsSeparator = (false !== strpos($prefix, '\\'))?'\\':'_';
+                $cPrefix = rtrim($prefix, $nsSeparator) . $nsSeparator . 'Captcha';
                 $cPath   = rtrim($path, '/\\') . '/Captcha';
                 $loader->addPrefixPath($cPrefix, $cPath);
                 return parent::addPrefixPath($prefix, $path);
@@ -253,7 +249,7 @@
     /**
      * Load default decorators
      *
-     * @return void
+     * @return Zend_Form_Element_Captcha
      */
     public function loadDefaultDecorators()
     {