Ubuntu 12.04.1 installs & runs without modification, but some minor Fn keys didn't work (e.g., WiFi toggle button).
Arch Linux with systemd installs & runs fine, and it had great battery life because 'rfkill block all' seems to more thoroughly power-down those circuits on Arch than Ubuntu. (well over 7 hours with wired ethernet, plus Emacs and Firefox in heavy use)