[Note: I previously posted this on ubuntuforums, but I'm also posting it here because I'm not getting much help there.]
I have a Dell Mini 9 running Ubunbtu Jaunty (9.04), and I'm having some issues with the acceleration behavior of the touchpad.
What works: When I move my finger slowly, the cursor also moves slowly. When I move a little faster, the cursor accelerates; that is, moving the same physical distance on the touchpad results in the cursor moving farther.
What doesn't work: When I move my finger very quickly, instead of accelerating even more, the cursor moves more slowly. (By "very quickly", I mean I move my mouse across the entire touchpad in maybe .5 sec.)
I can't say for sure, but seems like I'm moving too fast for the touchpad is to register. I don't think it's a hardware problem, since acceleration behaves as expected in Windows XP.
As a result of all of this, I find it really annoying to use the touchpad -- this is especially salient because I've been using a new Macbook Pro where the touchpad moves the cursor exactly where I want it to go without me having to think about it.
I tried installing the gsynaptics package and playing with the max speed, but it doesn't seem to help.
Any ideas on how to fix this?