Since another computer on the same network works fine, and you switched the ethernet cable and router port, it's safe to assume that the problem is directly linked to the PC (either hardware or software). I would say software, however...
Have you looked at the router itself? Many routers have access control settings that can block a MAC or IP address from specified websites. You could also try manually changing the computer's IP address, just to be sure it's not an issue with the IP address and the router.
You could also try a live Linux distro to make sure there's not a bizarre issue going on which isn't related to software. There's also the option of switching the actual router with a spare and seeing if that changes anything.
Thinking outside the (router) box... have you looked into parental controls? Maybe someone accidentally (or improperly) set up parental controls on the computer.
Have you tried running nslookup, ping, or tracert from the computer? It would be interesting if you could get a ping to Facebook. You might also try a text web browser like Lynx, just to see if you can get any web data at all from the sites.
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03-13-2012, 09:41 PM
Linear Mode
