public function flushAllAction() {
        Mage::dispatchEvent('turpentine_varnish_flush_all');
        $result = Mage::getModel('turpentine/varnish_admin')->flushAll();
        foreach ($result as $name => $value) {
            if ($value === true) {
                $this->_getSession()
                    ->addSuccess(Mage::helper('turpentine/data')
                        ->__('Flushed Varnish cache for: ').$name);
            } else {
                $this->_getSession()
                    ->addError(Mage::helper('turpentine/data')
                        ->__('Error flushing Varnish cache on: ').$name);
            }
        }
        $this->_redirect('*/cache');
    }