We have a Microsoft Intellimouse optical that seems to be really screwed up. It has suddenly become extremely sensitive to the touch. Every time you tap the mouse it automatically doubleclicks or even triple or more. If you try to open an e-mail, it opens it, shuts it, reopens it, etc. You cannot close one window because it closes everything else too. This came up suddenly and, after researching Microsoft help menu, naturally couldn't find anything to explain it. Tried the advanced menus on the control panel for the mouse and still couldn't find anything. Any suggestions? Or is a new mouse our best option? Thanks.