I've been having trouble with this game for a while now; I AM signed in, AND connected to LIVE, the game refuses to acknowledge this when I try to play online or look at the leaderboards. I've been looking for a solution for a while now, but the problem seems to be unique to me. Does anyone know what's going on?
EDIT: I got it to work; apparently, the game doesn't like you already being signed in when you start it up. Signing out and back in fixed it. I'm closing the thread.