"Frankly, I think it's a piece of crap,"Torvalds writes of Mach, the microkernel on which Apple's new operating system is based, with additional elements from the FreeBSD version of Unix. "It contains all the design mistakes you can make, and manages to even make up a few of its own."

I reread this article a few days back....I think it's funny. I'm sure Jobs is really enjoying Torvalds comments.