Not sure why but recently I noticed that I can't click and hold the mouse button down on my computer. For example, in paint when I try to cut out an object by dragging a box over it, it just won't drag or will turn on and off intermittently. Also when I'm playing an RTS game I won't be able to click and drag the selection box over my guys because I won't hold. I can click fine but the hold feature seems to be busted.