On Kubuntu 10.04, I have linuxwacom-0.8.6-1 working. Touch and stylus works. As far as I know multi-touch/gestures don't work. Edit: clicking with touch doesn't work at all as far as I can tell. Otherwise working great for me!!!
Followed these instructions: http://frankgroeneveld.nl/2010/04/11...-ubuntu-lucid/
Edit [for clarification]: I have installed this on Kubuntu 10.04. I haven't tried it on Ubuntu 10.04 yet.