Motorola RAZR V3

I've noticed that the up arrow key (up key on that round directional thingy) and also the menu key have a lot less of a spring to them than the rest of the keypad buttons. Also, once when I was scrolling through the phonebook, I pushed up and I think it kind of got stuck or something, because it just kept on scrolling, even after I released the button. It hasn't happened since then.. but I was just wondering if others have experienced this problem, or at least noticed a difference in the way these two buttons feed-back.