Apple tries to overcome OS X x86 hacking

Apple seeded a new build for the transition kit to the developpers (10.4.2 on x86).
To limitate the use of OS X on non-authorised PC platform, the softwares compiled for this version will not run anymore on the previous version (the one that has been available on P2P networks). Apple could do this for every update.
Then, the new updates of Xcode for PowerPC Mac will also compile softwares unable to run on the first build of Tiger x86.
Despite this solution seems to be complex, it attempt to marginalise those who downloaded and installed the OS X x86 on a 'regular' PC, this version being then very limited.
Apple is thus looking for limitate the spread of its system before finding a better way to protect it, while avoiding to early reveal its "anti-piracy" boards.