I had Kubuntu 8.04 on my P7120D laptop that I had been keeping updated with the GUI update tool. It offered to upgrade to 10.04, but I wanted to move to Ubuntu instead. I couldn't figure out how to do it (I didn't want to just change the desktop in case there were nagging issues), so I bit the bullet and did a new install from the CD.

It is working very, very well. Some problems with DHCP, but I think that's my WAP/router issue (I just manually gave it a fixed IP address, DNS, etc.).

HTH a little.

Cheers,
Scott.