It's hard to pinpoint what is still true unix. Solaris and bsd are the closest, with solaris being the closest out of the two. If anything is still powered by true unix yeah, that'd be rare. For server purposes...that's why centos and debian stable are ridiculous about stability with emphasis on server use. If you wanted to you could install them as a desktop operating system as well, it's a very stable experience, but i like the latest kernels and ff3.
To everyone else except ghostavo.
This topic should end since scuddie the flamer took it off topic from his first post in this thread. This thread was about those perfect instances when linux is great as an alternative. Do you really think that my ex cares that X may not be implemented properly? She can surf the web, have microsoft office compatible documents, and not need to worry about viruses. But no, everyones got to show how ****ing big their balls are instead of having a balanced discussion or story telling for that matter.
On the contrary, I do agree that ex will have still have problems implementing herself in future relationships.