I've had this problem on my laptop for sometime now. Anytime I try to use my touchpad it works correctly about 60% of the time in Windows, the other 40% of the time, it will jump to a random spot on the screen.
It has had this problem in Windows XP, Vista, and 7! I did clean installs of each OS. Now heres where it gets weird, when I switch to Ubuntu 9.04, my touchpad works fine 100% of the time.
Is there some way I can fix this?