Session won't be created in Mozilla Firefox - zend-framework

Question

I am working on a purchase system in my assignment and trying to solve the problem by using a session to store data in the process.
Although I'm experiencing a problem in Mozilla Firefox, which cannot for some reason work with the session I have created. There's most likely no doubt that I must have made some kind of mistake.
The process is as follows:
User fills form -> Clicks submit -> [Validation process] -> User reviews confirm page
Here is the relevant code from the controller:
public function indexAction() {
$this->gatewayForm = new Payment_Form_Gateway;
$save = $this->validate();
$this->view->gatewayForm = $save['form'];
$this->view->alert = $save['alert'];
}
public function validate() {
# get form
$form = $this->gatewayForm;
if ($this->_request->isPost()) {
# get params
$data = $this->_request->getPost();
# check validate form
if ($form->isValid($data)) {
$session = new Zend_Session_Namespace('formData'); // name space creation
$session->data = $data;
$this->_helper->redirector('confirm', 'gateway', 'payment');
} else {
$alert = array('Pay failed');
}
$form->populate($data);
}
return array('form' => $form, 'alert' => empty($alert) ? null : $alert );
}
public function confirmAction() {
$this->_helper->viewRenderer->setNoRender(true); // disable std. view
$session = new Zend_Session_Namespace('formData');
$data = $session->data;
if(isset($data)) {
$this->_helper->viewRenderer->setNoRender(false);
} else {
$this->_helper->redirector('index', 'gateway', 'payment');
}
}
Things go wrong in the confirmAction in Firefox, the session namespace seems to be empty? Although this does not occur in Safari, Chrome, IE etc.
Thanks in advance.

Answer 1

I reinstalled Firefox and removed config and cache files which did the magic. Problems solved!