Up until two days ago, I could visit sites like apple.com, some email sites, and some corporate sites, but every time I try to view them now, firefox immediately shows the "Page can not be displayed" page. The same thing happens in Safari. The strange part is that my other computer (Windows) can view them with no trouble. I tried resetting the router, resetting the wireless signal, rebooting, and going through references to find something wrong, but I am stumped. The only programs I have running are Firefox, iTunes, iChat, and Transmission once in a while (the problem occurs whether or not Transmission is running). Does anyone else have this problem/know how to fix this?