Ubuntu 9.10: works for me!
I was a bit worried about upgrading to Ubuntu 9.10 after El Reg’s scare stories claimed that nine out of ten people had problems with the automatic upgrade.
I guess their stats were skewed, nine out of ten people who are complaining on the Ubuntu forums were complaining about the upgrade, which is nothing like nine in ten people having problems.
Worked fine for me on two different machines, my only problem is that the battery charge profile on my laptop was lost.