Seems unrelated to JB's problem, but i also get a random crash, when i host a game it sometimes crashes instead of going to the game's screen.
Another thing thats been happening is i've been trying to play with Cal Skinner but for some reason the game usually freezes in the middle of the match! Its some problem on his end so i cant really post any specifics but since he doesnt seem to have a forum profile ill just post this for him.