Touchpad Preferences-GSynaptics

My touchpad was driving me crazy; every time I tried to edit a document in Ubuntu Linux, my cursor kept jumping around like a grasshopper. There is a Multiverse application called Touchpad by GSynaptics which will let you change your touchpad settings or disable it. Just click Applications>Add/Remove, then type Touchpad into the search box. Oh, and make sure you have the "All Available" drop menu option set too. Check the box and click Apply. After the application installs, you will see it in your System>Preferences>Touchpad. There is one more thing you will now have to do (oddly, most applications don't require this sort of editing procedure). Open the Terminal, and type in
sudo gedit /etc/X11/xorg.conf
Enter your admin password, then scroll down the file that opens up until you see
Section "InputDevice"
    Identifier    "Synaptics Touchpad"
This is where you will want to add:
    Option          "SHMConfig"             "true"
Click "Save" and then exit. Reboot, and now you should be able to disable/enable your touchpad with ease.