Sessions - Bug?

[eluser]Fierymind[/eluser]
well, the "sommtimes" failure drive me crazy, but here is some info in my case, may that help:

- we do try this on live web server with live domain name
- there is NO output before cookie/session work and I know what I'm talking about.

here is the user/password verification function

Code:

function verifyUser($u,$pw){
        
        $this->db->where('user_name',$u);
        $this->db->where('user_pass', md5($pw));
        $Q = $this->db->get('users');

        if ($Q->num_rows() > 0){
            $row = $Q->row_array();
            $something = $this->session->set_userdata('user_id',$row['user_id']);
            $this->session->set_userdata('user_name',$row['user_name']);
            $this->session->set_userdata('access_level',$row['access_level']);
            return TRUE;
        }else{
            
            return FALSE;
        }        
    }

if we put this function in model 'muser', and called it from 'user' controller like :

Code:

if (!$this->muser->verifyUser($_POST['username'],$_POST['password']))
{ /*you are not loged */ } else {/* you loged*/}

it will "sometimes" fail to write the cookie

but if I put the same function in controller 'user' itself and called it like

Code:

if (!$this->verifyUser($_POST['username'],$_POST['password']))
{ /*you are not loged */ } else {/* you loged*/}

it works allllll the time.

please note that session lib and all models are autoloaded.