Confirmed still a problem on Lucid. I suspect the culprit was an updated "laptop-detect" package, but I have no evidence to back that up.
Doing this did solve the problem:
gconftool -s /desktop/gnome/peripherals/touchpad/touchpad_enabled -t boolean true
I used gconf-editor to make the change graphically.
Confirmed still a problem on Lucid. I suspect the culprit was an updated "laptop-detect" package, but I have no evidence to back that up.
Doing this did solve the problem:
gconftool -s /desktop/ gnome/periphera ls/touchpad/ touchpad_ enabled -t boolean true
I used gconf-editor to make the change graphically.