I know what is wrong with the accelerometer, (Tested with F1 game)
Nothing!
Its the bug with the firmware that is causing the game to be displayed in the wrong orientation
The accelerometer is set to tilt left and right if you are holding the tablet vertically lengthways up and down
But the game is displayed horizontally so you have to tilt the tablet away and toward you instead of left and right.
I really hope the new firmware fixes the orientation issue because after realising what was wrong, its actually a very good accelerometer.