So, on my iPad2 IOS5, when in landscape orientation with the square button to the right, if I tilt away from me the screen swivels round when I get to about 10 degrees. But when I tilt back towards me I need to go to beyond 30 degrees before the screen reorientates. It seems variable - sometimes I seem to need to tilt to 45 degrees before the screen rotates back. In the portrait orientation it needs about 30 degrees to swivel, whether I tilt one way or the other. Is this how it's meant to be? That the landscape screen tilt works at different angles? Surely not. Why would it? Does anyone else have this problem?