This appears to only occur when I attempt to host or join a multiplayer cataract map (it definately happens on host, join might have been something else) When I host and hit launch game (2v2, me and a friend vs 2 normal ai) I get stuck on the lobby screen and the game freezes.  I have to end process whist unable to alt tab the game entirely.  As far as the maps me and my friend have played this is the only one with this problem.  Also it seems when I attempt to join a game on Cataract I join it and then DC from the game shortly after it starts.  However this was the only map my friend attempted to hose, so that could be some other issue.  Now first I just figured that the map file was corrupt in some way, however I can play single player matches on Cataract just fine, adding to the mystery.

Any ideas?

ps: afraid to verify installation because I hear it will make me re download the whole game.  I have a pretty bad connction so it takes me 5-7 hours to download the whole thing.  If i could simply replace a map file or something like that it would be a far better solution.

Hardware:

AMD X2 2.4Ghz

4gb ddr2 corsair ram

1gb Nvidia 250 GTS

pps is there any way to form a "party" type thing for pantheon mode?  I would love to play all of my matches with the friend I bought the game with and would be very dissapointed if this was not possible.