I was accidentally choosing things when I meant to scroll when I first got my thunderbolt, I'm not sure if I got used to my phone or it got used to me. It stopped after a couple of days. I don't know if there is a setting for screne sensitivity.
I seem to remember reading somewhere that the phone has to learn your touch, but I can't remember where I read it, so I may have imagined it. Somebody more knowledgeable may know for sure.
I have the app "call confirm". everytime i dial someone, hit send, it pops a box up says "do you really want to call (so and so) confirm/cancel" works great.dancedroid
I used an app similar to call confirm, (maybe it WAS call confirm, I forget), and had issues with Google Voice.
If you you G Voice, and prefer to have the option "ask every time I call" whether or not to use your G Voice number, it may not work with this program.