I installed the JeOS 8.04 rc image in a VMware Server 1.x guest
environment, running on a Gentoo Linux x86 host (32bit).
The JeOS image has been downloaded from Ubuntu at
http://cdimage.ubuntu.com/jeos/releases/8.04/rc/. After having
installed Ubuntu in VMware, I installed all the available
updates using aptitude.
After having done that, I installed Xubuntu (or at least
that was the intention... *G*), by running:
sudo aptitude install xubuntu-desktop
This worked fine (I assume, as there were no error messages).
I then rebooted and was greeted with a nice login screen,
where I selected the "Xfce Session", as I'd like to use