Bout 2 days ago my 360 suddenly began to run its normal functions at a turtle's pace. It takes 10 minutes just for it to bring up the profile avatars, and then another 20-25 to actually sign in with them. And once all that's finally done, I go to play a game that requires an update and it starts downloading, and then freezes at like 5%. Then I get a messege saying it cannot update. Now I've read similar posts in the forums and tried some of the suggestions short of calling in for a system repair. Including, cache cleaning, formatting, proper space and ventilation, resetting internet connection and settings, etc. None with any sort of improvement or progress in a remedy.