Connection impacting other computers on network?

Computer 1: Windows 2000 Pro. Drivers are all updated. Connection to router is normal (as in web pages load, for example).
Computer 2: Just updated to Windows 7 RC x86. Drivers are all updated. connection to router is normal (as in web pages load, for example).

Router is Linksys and DSL is pretty generic SBC/AT&T with filter on phone line.

Running an MMO (World of Warcraft) on both computers. This has never been an issue before. Since the update, computer 2 when attempting to log in is getting most of the way then failing and disconnecting. Trying to debug that on the MMO end, but the odd part is that it is killing the connection computer 1 has at the same time. This never happened when Computer 2 had Windows 2000 Pro or Windows XP installed - only since upgrading to Windows 7 this morning.

I'm about to try giving Computer 2 a static IP - something it has never had - but is there anything else specific to Windows 7 that I might want to check?

yep, this is the case. Same for me... take a few hours, lol, and have a few reads in this subforum, you will see your case isnt the only one.

As for me its a belkin G adapter using an atheros driver, which shuts down the wlan with a laptop using an intel chip that never loses connection by itself. no known real fix has become avail. You can try viewing the rest of the threads here to see what you can compare and come up with on your own. The more detailed info you can provide, the better.

welcome aboard