Re: router problems
Is your router secured with WEP or something? Maybe one of your neighbors or someone is connecting to your network. Somewhere in your router settings you should be able to look at all the connected computers. In my Netgear router it's under "Attached Devices".
C2D E6600 | 4GB DDR2-800 | 9800GTX+ | Asus P5B-E | 150GB Raptor | 320GB 7200.10 | 750W Xigmatek PSU