Can't play 2v2, 3v3 or 4v4. Only 1v1 works.

[Expatriate]

I've been trying through both automatch and through joining a specific game in the lobby. Everytime I join a game with more than 1 other player, the game locks up at the loading screen with the "Waiting for other players" text at the bottom.

1v1 works fine, and I can't figure out what the problem with more players is.

Can anyone help me solve this?

[ÜberJumper]

Post your warnings.log file after such a lockup.

What type of router do you have? Firewall software is all off?