Comment 6 for bug 1294466

As Lars already mentioned, the problem seems to stem from the two input devices. Disabling the second Touchpad helps working around this bug. This can be done in X11 settings:

sudo vi /usr/share/X11/xorg.conf.d/51-synaptics-quirks.conf

# Disable generic Synaptics device, as we're using
# "DLLxxxx:xx 06CB:xxxx Touchpad"
# Having multiple touchpad devices running confuses syndaemon
Section "InputClass"
        Identifier "SynPS/2 Synaptics TouchPad"
        MatchProduct "SynPS/2 Synaptics TouchPad"
        MatchIsTouchpad "on"
        MatchOS "Linux"
        MatchDevicePath "/dev/input/event*"
        Option "Ignore" "on"
EndSection