Okay, I just got internet, and it's cable, so normally it's very fast and normally I don't get disconnected. I can play all of my games on Xbox Live, with the exception of Halo:Reach. I don't understand this. as soon as I put it in, it signs me out and says I can't connect to Xbox Live. The game does, however, still work on my brother's Xbox. I don't understand this. Please help me!