So I grabbed Vegas 2 off steam the other night, and tried to terrorist hunt and coop with some friends yesterday. As soon as I connected to their game however, I lost ALL internet connectivity. Steam, Ventrillo, newsleecher everything just disconnected while networking showed I was still connected.

So I close Vegas 2 and everything comes back. A bit later I tried joining a versus game, worked fine.

Anywho with the servers down and no word from Ubisoft we decided we'd setup hamachi and play that way.

Get in, EXACT same bug, I lose ALL internet connectivity when connecting to any co-op Vegas game.

Now I've been trying to get into the support site and put in a ticket for about an hour but can't get in so I thought I'd ask if anyone has seen this before here.

Do you have Windows firewall enabled? Or a 3rd party firewall, possibly part of an antivirus? Maybe a firewall built into your router if you have one?

If all firewalls and antiviruses are disabled, and you have a router, check to see if you have UPnP enabled.