mouse & pointer

[fiat]

Hi, Just recently my wacom wireless mouse has become weird when used with my early09 mini with SL: supposedly when lift up mouse, move to other place (above mouse pad or in my case the tablet), and put down, the pointer on screen should stay and not move following the lifted mouse. But now it suddenly changes to behave exactly the opposite way: the pointer moves to the place the mouse lands. I thought mouse driver has been out of date and got/installed the latest version, but nothing matter. Any idea what's the cause and how to fix this? Thanks