Comment 9 for bug 736523

Contrary to what I wrote earlier, this is best described not as a kernel bug but as a deficiency with the X synaptics input module. I made some changes to how it handles multi-finger functionality and I believe it works much better as a result.

However, the changes are larger than I would like this late in the Natty cycle, so testing is important. I uploaded a new version of xserver-xorg-input-synaptics to ppa:utouch-team/unstable. Please test out the package to confirm that it fixes any issues you have and does not introduce any regressions.

The only remaining issue that I see occasionally is a second light touch warping the pointer from one location to another half way across the screen. To get this fixed will require better filtering logic, but the fix will require too large of a change at this point in the Natty cycle. Perhaps we can fix it in Oneiric.