I updated my phone a while back, i believe it was when the update had come out for the blackberry curve. once i updated it everything was fine, but then the trackpad was acting on its own, it would move up and down. while i am texting someone it would move up through the conversation and then it would go in the middle of my sentence. while i am in the middle of my sentence i would type out something without realizing it had done that. this has been going on for a few months now. i dont know i think it might be water damaged.