Xubuntu 11.10, codenamed the 'Oneiric Ocelot', is the latest and greatest version of Xubuntu. Building on the success of Xubuntu 10.10, Xubuntu 11.04 looks forward to continuing the tradition of being a light-weight and easy-to-use Linux distribution built on top of the high-quality and feature-rich core of Ubuntu. Xubuntu 11.10 Amd64 Alternate CD includes most machines with Intel/AMD/etc type processors and almost all computers that run Microsoft Windows, as well as newer Apple Macintosh systems based on Intel processors. Choose this if your machine is 64bit.
Xubuntu is a Linux distribution based on Ubuntu. Unlike its parent, however, Xubuntu uses the light-weight XFce desktop environment and is optimised for lower-end machines. The distribution includes only GTK+ applications where possible.