[PokerImprov]

Have you tried to connect to the router? Reset your router and then type in the default ip for it and check it out. most are 192.168.1.1

Just a random question, but have you been messing with a lot of torrents? Sometimes when I have been uploading/downloading a lot, my router will crap out for a bit.

Have you tried switching router ports? Try power cycling through all the ports. (physical hardware ports, not internal ports)