I installed the latest ubuntu (12.10) on my Gateway LT2802u netbook via USB. This is an atom based processor, 2gb ram. The install went fine, but from the start I have not been able to use the touchpad. My googling has not uncovered any leads. The preferences tab for Touchpad is in the 'Mouse and Touchpad' settings, but the settings don't change anything.

Thanks in advance for the help!