http://crunchbanglinux.org – Just recently replaced an older Xubuntu 11.04 install, with #! Waldorf (w/XFCE), on a fairly new desktop PC. The performance gains are incredible, from startup to shutdown, and everything inbetween. Although I won't get into the specifics, unloading the *buntu middle man really makes a difference. Installer worked great and system working flawlessly. (HowTos)