I really like the Type Cover, and like most find the touch pad a bit disappointing. The disappointing aspect of it for me is, like some have said, move your cursor where you want it and in the process of taking your finger off the touch pad the cursor moves! Drives me nuts. I've compared this to a MB I have and that touch pad doesn't do that...go figure.
I can't say that I've had issues with my cursor moving off of buttons.