Has anyone else had a problem playing backups after the newest dashboard update? I tried playing Guitar Hero Van Halen in my old banned Xbox with the absolute oldest (obviously non-stealth) firmware on my Hitachi drive. When I first loaded up the game, it told me I needed to apply the update because I haven't had that box hooked up in ages, so I did it and the game played fine. Now it will no longer load it up, or any other newer backups. Very old backups that I have still load but no newer ones.

Just a coincidence, Hitachi's have the worst performance track record.