I have been playing online on ps3 (about 250 matches) and a friend of mine has just started playing (about 50 matches)... but for some reason it won't let us play together. We both have high-speed internet through comcast, both show a full signal in the game room, it starts to connect the match, but before it can get to the character select screen it says something like "this game session is no longer available."

It will let me play almost anyone else in there, and it will let him play anyone else, but not each other. I've only had this happen with 2 or 3 other users in the game room and I would just pick someone else, but with this being a friend, I'd like to figure out how to play him. Any ideas? Anyone have this happen before?