Configuring Synaptics touchpad in Ubuntu/Kubuntu Feisty Fawn
Edit the /etc/X11/xorg.conf file and look for the section for Synaptics Touchpad.
add Option “SHMConfig” “on” to the bottom
save and restart xorg (ctrl-alt-backspace)
install the gsynaptics package
sudo apt-get install gsynaptics
you can then run the program qsynaptics to bring up the gui to make the touchpad settings.