Apple has an article on the core elements of Leopard. “The Mach kernel and related core technologies, including Bonjour and the file system, have all been significantly enhanced. Full POSIX compliance and UNIX03 certification means you can move all your critical UNIX applications to Mac OS X quickly and easily. Security, always a strong point of Mac OS X, gets even better with improvements to authorization and certificate management.”
There ya have it… a great move (compliance) by Apple.
Bravo!
Jb
This is why I love OSX, Apple is always working on perfecting every detail of the OS. ( like Linux )