RE: Just got back from a 2000 mile trip........
The windows roll down a half inch or so when you open the doors and roll back up automatically after you slam them shut. It's because of the tight fit of the doors and lets air escape. (I found out about it before I got my car by something that was in a thread several months ago.) It happens even if the doors aren't locked. I never noticed it having anything to do with holding down the button a third time. I'll have to try that.