I have a bunch of installed games on my 360 hdd (120gb) and whenever I turn off my 360 before going back to the dashboard, the game acts like its not installed anymore. I press Y and gives me the option to install the game again, but under memory, it's there. Does this happen to anyone else? This only happens to me when I turn it off before going to dashboard. If I go to the dashboard and then turn off my 360, it still detects that the game is installed.