“While the main Ubuntu release is far and away the most popular,
that doesn’t mean that it’s the only arrow in the ‘buntu quiver.
For users who want a more traditional Linux desktop, have older
hardware, or just happen to have much love for Xfce — there’s
Xubuntu. And it’s looking pretty good as of the Natty Narwhal
release.“With Xubuntu, you don’t get an exact replica of the GNOME
desktop — but it’s a pretty slick desktop in its own right
that offers a similar experience, with the added benefit that it
doesn’t require 3D and is pretty snappy even on lightweight
hardware.”