Maybe it's just mine, but I noticed that when the tablet is upside down (so the volume buttons are facing you), The tablet seems laggy moving from screen to screen. Using something like the browser isn't noticable, but you can definitely tell a difference. First I thought it was an app I installed, but I'm not so sure now. When I turn back around (with the dock port facing me), it moves like it should, lag gone. Anyone else see this? I only noticed it because of the Acer protective case I got.