Found via Slashdot, Apple is using DRM to keep parts of the OS from working on unauthorized computers. The Slashdot story includes links to a wiki on x86 Mac OS X, which in turn pulls its information about the TCPA/TPM DRM from this FAQ.
The problem is that the site is titled Against TCPA (which is also their domain name). It’s not exactly an unbiased source, to say the least. I want to find a slightly less paranoid breakdown of the technology.
That said, this may very well be the way that Apple wants to use to prohibit use of Mac OS X on generic Intel PCs. The question then becomes is this DRM in some way hackable? If so, we’ll likely see OS X on generic Intel PCs. If not, we won’t.