Freeradius bugs..After restarting server..user still connected..

Hi there, My server got hanged i restarted it.After that i tried to login to client machine. I am getting message. You are already logged in - access denied..(hotspotlogin.php) I can see in my radacct table field AccterminateCause is empty..there is no cause of disconnection.. Sometime it works.. Is it a bug???? How can i resolve this issues. Any help appreciated.. Thanks Durjan Hussain --------------------------------- Ahhh...imagining that irresistible "new car" smell? Check outnew cars at Yahoo! Autos.