Annoying Router problem.
 

I have a linksys WRT54G router with the most recent firmware installed and I have this very annoying problem where whenever I connect to the PSN my computer loses internet connection for a brief minute. I have the PC and the PS3 both set up with a static IP since the PC has ports open for FTP and bittorrent and the PS3 has the correct ports open so it can acquire a NAT2 connection and play online games. This all works correctly. I just can't figure out why the PS3 connection always kills my PC connection for a minute.

Any ideas?

Try disabling UPnP in your router settings.