My trunk keep popping open. Is anyone else having this problem?

My trunk has been popping open periodically since I got my 2010 LaCrosse over 4 years ago. Took it to the dealership but they can find nothing wrong and can't duplicate it of course.

Had the same problem with my 2012 and occasionally my current 2014. It's the key fob, really sensitive, if it's in your pocket or handbag and gets jostled and something touches the trunk button, voila, trunk opens. Not just the Lacrosse either, I know someone with a Verano and it keeps happening to them as well. The button on the key fob is just too sensitive.