Magento – Customer Session is Empty In Custom Module

I have made a custom module which uses the customer session, but its strange, on live site its not returning customer data.

I have tried following methods:

$sessCustomer = Mage::getSingleton('customer/session', array('name' => 'frontend'));
echo '<pre>';print_r($sessCustomer->getCustomer()->getData()); echo '</pre>';exit;

It returns:

Array
(
    [website_id] => 1
)

If I print the customer session:

Mage::getSingleton('customer/session')->getData();

This returns:

array(
    [_session_validator_data] => Array
        (
            [remote_addr] => <MY IP>
            [http_via] => 
            [http_x_forwarded_for] => <MY IP>
            [http_user_agent] => Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:16.0) Gecko/20100101 Firefox/16.0
        )

    [session_hosts] => Array
            (
                [bestevalue.info] => 1
            )
    [messages] => Mage_Core_Model_Message_Collection Object
            (
                [_messages:protected] => Array
                    (
                    )

                [_lastAddedMessage:protected] => 
            )
    [id] => 
)

I am logged in, can see the customer dashboard with customer info on it but not able to use that session in my custom module.

Please guide me how to fix this.

Update:

I have checked in /app/etc/local.xml that session type is file

<session_save><![CDATA[files]]></session_save>

So is there different method of extracting session info with PHP? What am I doing wrong?

Update 2:

i have used router as well to make pretty url

public function match(Zend_Controller_Request_Http $request)

on start of this action i placed

Mage::getSingleton('core/session', array('name' => 'frontend'));

but still not working with router without one it is working for example directly accessing the action :

site.com/module/controller/action

it works but not with router. any thoughts? thanks,