just to add to your dilemma, I too was suffering this problem, to overcome this I removed all wireless networking including the router and everything was fine but I share the connection from the main source so I have to suffer the wireless problem of routing. I have to keep clearing my connection to the network, reboot and away I go again, sometimes for hours and even days. Some serious issues have cropped up lately with routers and browsers in the last year as we have discovered at Brunel University in London. The internet and protocols are changing and more and more people are suffering this problem world-wide. PS. We also refuse to use explorer 7 as it is so full of bugs its not worth the problems it causes. Microsoft again rolling out something and letting the world report its faults. All the Macs we use are full steam ahead and never go down, and i'm not a great lover of mac's