I have a laptop running Ubuntu Jaunty. This laptop has a touchpad. I want to turn off tap-to-click. The ubuntu documentation for touchpads, refers to a Touchpad tab on my System -> Prefereces -> Mouse settings, but there is none. Is there something I need to install?
Yes, you need to install the gsynaptics package as the Ubuntu community document states:
For a preference tool which integrates into the GNOME Desktop environment, install the gsynaptics package from the universe repository. For help with installing packages see InstallingSoftware.
After installation, gsynaptics can be found under System > Preferences > Touchpad.