Received my new iPad today. Got a white one as my old 2 was black. Having a good look over it I noticed a small mark on the rear of the device. It's tiny. Maybe the size of a fly. It's just under the 3G bar. Maybe I'm being anal but everytime I look at it I get annoyed and starting to think I should take it back. It maybe small but not what u expect from a new device costing over £550! Has anyone else experienced this with their iPad 3 or just me!? Should I take it back or live with the mark?