I've got the above router with latest firmware and yesterday i've just started to have problems only when i'm downloading with uTorrent. The router completly messes up about every 3-5 mins and the whole network doesn't work. The only way to get it to work again is to unplug it and plug it back in. I'm pretty sure i haven't changed anything from when it worked to now.
BTW i'm running Vista 64 - had no problems with this before with uTorrent. Only got AVG running and Windows firewall is allowing uTorrent. Also port is forwarded to my computer.