@Wayne:
Well, to be perfectly fair that reads like a press release for an all-purpose computer, not a custom security solution (if all I want is a strong firewall, what do i care about all the OSs I can run on it and what impact it's going to have on hobbyists?)
That said, his emphasis on "PowerPC is not x86 and therefore more secure" is a bit naive. Security should be based on strong software auditing procedures (ie go over your code with a magnifying glass to make sure there are no buffer overflows, use of software complexity metrics, etc), not some vague assertion that the script kiddies won't know how to r00t a PPC box. Sooner or later they will, and a determined hacker won't be put off by a different instruction set.