It was bound to happen

Hardmac.com : Le "Macbidouille" in English: "The Apple Developer kit version of MacOSX x86 has indeed been fully cracked!"

(Via HOW TO - Mac OS X Running on Non-Apple Hardware.)

No big deal. After all it is only the developer version. It would be interesting to see how Apple is going to prevent people from cracking OS X 10.5 Leopard though. It would be a real pain to see OS X running on a Dell.