I haven't read this thread for some time (been traveling quite a bit), and it's a little comforting to see that others are experiencing this as well (sorry all "others") and I'm not imagining things. Again, I am absolutely, without any doubt whatsoever sure that I did not trigger the button accidentally. I will take this up with my dealer next time I'm there for service. This worrisome and should be at least given some consideration by Mazda. From time to time, I transport a LOT of expensive photo gear in my car and an occasional quick stop somewhere may prove tragic. Even if with an empty car, imagine the consequences of your tail gate opening during a torrential downpour! No thanks.