I notice because of the large surface area of the button and the fact that they are almost flush with the wall and hard to find in the dark, people tend to hammer on decoras, either because they are groping blindly for them or they just hit them too hard when using them. This may be a little out in left field, but how full is the box? I notice decoras get flaky and temperamental if the wires in the box are pushing on the back of the device.
