Hi friends, I've win XP PRO SP2, 512 MB ram, i m connecting net via NOKIA 5130XM with pc suite (Airtel MO 2GB plan), prob is that after 15-20 min. My internet stop working, i mean no data transfer, and no pinging: REQUEST TIME OUT, and also XP theme auto changes to classic. And when i click on network icon in system tray, it happens nothing, even after disconnecting datacable from cellphone, modem shows connected. then i've 2 restart PC. plzzzzzzzz tell me is this any virus or something also? plzzzzzzzzz solve my problem.