Comment 7 for bug 636091

From the Xorg log, it seems the trackpad is picked up by the synaptics driver (as it should). It would be great to see if this problem persists when running a different driver, like evdev. In order to do so, you would need to add something like this to /etc/X11/xorg.conf and restart:

Section "InputClass"
    MatchIsTouchpad "true"
    Identifier "Touchpad"
    Driver "evdev"