I did a fresh reinstall of Ubuntu on my laptop today, now it runs Gnome after 2-3 years of reliable KDE usage :) If I remember correctly I installed an early release of Breezy Badger on it because the kernel in Hoary Hedgehog didn't have good support for my S-ATA controller. It has worked like a charm ever since, so it's not that it didn't work any more it was more like a fun thing to see how the installer behaves now. In addition, I'm running KDE 4 on my desktop at home now so I want at least one computer with Gnome on it.
So, for the real purpose of this post... It does not seems to be so easy to customize the locale settings in Gnome as it could be. I really want to use English as the language on the computer but having dates etc in Swedish. Unfortunately this has to be configure in a text file in the home directory so its not that easy for newcomers. Anyway, adding the following lines to ~/.gnomerc solves the problem.