I've had issues with my Xbox failing to load profiles. It would just keep loading and I'd have to restart it several times until it works. Sometimes, when it does load, it either freezes while I'm playing a game, or when I go back to the home menu . I've had this problem for few months. About a month ago, one of my game save files was corrupted/deleted, at first I thought it was just some kind of glitch because the save file somehow came back, but now pretty much ALL of my game files are corrupted. Including the multiple saves I had just in case it happened again, and the files that I've saved on alternate storage devices. I've only had my 360 for about 2 years.