I searched and didn't see anything about this. I have the Magic Track Pad which I prefer using over the mouse but I have one repeating problem that drives me nuts. When I click and drag with it (to move an item or resize a window for example) it does not release reliably. So when I then try to move the cursor elsewhere I inadvertently mess up what I've just done. It's like the pad does not spring back up when I take my finger pressure off of it. The feet on the narrow edge are the actual buttons and they are not dirty and it is sitting on a hard surface. They don't stick if you are single clicking.