I am computer challenged so have very limited knowledge about "programming" but here is my problem. I just bought a N900 which connects to internet through Wifi very intermittently. It connects through ATT GPRS flawlessly but not through Wifi.

I have tried it both at my home and corporate wireless network.

(My other N900- another story, returned because it was bought at higher price) connected to Wifi flawlessly but this other unit connects only intermittently and most of the time gives page error. I read somewhere it might be a dns auto-retrieve error. Can someone teach me how to flush the dns cache (step by step for a layman) or what could otherwise be the problem and how to troubleshoot or should i just return this one too?