First off this console is only a few weeks old. I admittedly am unsure if this is something I should or shouldn't be concerned about at this point. The menus and everything are fine, but several times I've had issues with it freezing during a game, two different games both installed on the HD. When it freezes the entire system is locked up, the guide button does nothing at all and my only option is to turn off the console manually. The console is not hot when this happens, nor is the power block, just warm as you'd expect with the console being on. It is in a well ventilated area, and as stated the games are installed.