So my early 2011 MBP cursor keeps moving and clicking things by itself. It goes on and off. And yes I took my MBP to Apple Care and they changed the trackpad. I thought everything would have been alright. But it took two days after the change to live it's own life again... What's the next thing to do? Reinstall OS? I guess I must call that place again and bring my MBP back to them.. But maybe there's an easy solution to this?