For some reason today when I tried to get on xbox the only thing that shows is the "My xbox" and "Friends." But my friends avatars won't show up, it's just blank. And I get some error notification saying that some of my features are unavailable and will show up later or something. When I try to play black ops I can't even get past the little treyarch intro and it signs me out of live. It's really frustrating. What's going on?