I’m in the middle of upgrading my machines from 8.10 to 9.04. So far, I’ve run into two problems.
The first problem was that on my first machine to upgrade, I’d launch KDE (or Gnome) and the terminal windows didn’t have a prompt. Also, update-manager or synaptic would complain about pty(s). A google / ubuntuforums search led me to the solution. In the past, VirtualBox required a change in /etc/init.d/mountdevsubfs.sh. This is no longer the case, and that change was the source of the problem. The correction is to
sudo cp /etc/init.d/mountdevsubfs.sh.dpkg-dist /etc/init.d/mountdevsubfs.sh.
I did this before upgrading the second machine, and it worked fine.
The second problem was sound. Pulseaudio and Alsa didn’t seem to be working (after working briefly). First, I followed the instructions in this Ubuntuforums post. This sorted out sound in Gnome, but Amarok2 still didn’t work. Looking for phonon and my soundcard led me to install phonon-backend-xine and select it as my default backend. Now Amarok2 works .