The Chromebox apparently uses a verified boot, so no Linux unless you can replace the bios. It's a shame since a small footprint, low-power, turnkey Linux box would be just the thing for a number of applications, though the Chromebox lacks a way to add fast storage.
Thanks. I do not understand why someone other than Apple or Samsung does not make something like this (without the price premium Apple wants for OS X and without the verified boot).