Comment 4 for bug 365943

Ok, you've got report of your first victim here: On both a Macbook Core 2 Duo (touchpad 051c:021a / appletouch) and whatever touchpad the Dell Mini 9 uses, installing 2ubuntu5 from the PPA causes EXTREMELY poor fine-grained control of the touchpad to the point that it is utterly unusable. Long scale movements are exteremely nondeterministic:

Moving slowly (i.e. 0.5cm/sec) across the touchpad produces ZERO movement, swiping across the touchpad rapidly might move the mouse halfway across the screen.

 Maybe the limits are not well tuned or universal?