Lost Session - Subdomain

[eluser]CI Mario[/eluser]
I hope this is the right forum for my question, my sincere apologize if I am in the wrong place.

I have a sub domain hosted with godaddy and have a full CI running on the main domain and as well on the sub domain.

When I run the app in the sub domain the session is getting lost.

my curretn settings are:

I am not running an .htaccess
$config['uri_protocol'] = "QUERY_STRING";
$config['index_page'] = "index.php?";

Would appriciate if anyone can help me with this. It seems that a lot of problems hosting with godaddy, or maybe it is my lack of the understanding the requirements.

Mario