I chase my 3 daughters in the park jumping a good 5 feet of playground equipment, I move furniture on the weekend, I teach aerobics and run Basketball players through personal training all with my treo 600 in its proclip for a year and now my t650 in its pro clip and I have never had it happen or heard of it happening to any one else. p.s. do you know how to get the actual image to show up in the post?