When playing Sonic & Sega All Star Racing, randomly the controller won't respond to the green A button, which allows you to use the very important power ups. I say randomly because it is literally a guessing game as to which of my 4 controllers is going to work. I've tried restarting the system to see if it would reset them, but all it does is change which controller will work in the game. Outside of the games all the controllers work fine. This is a problem even when only 1 or 2 controllers are turned on as well.