Windows Genuine Cracked??

BTW: This is not even an hack as far as I am concerned but if you have a "Legit" Windows Install that is giving you problem with the WGA... Open up the Windows Updater
Go to Tools, Manage Add Ons, Disable Windows Genuine Advantage..

BINGO!!!! Your Windows Update will work as before....

I had to do this on several Dells fresh out of the box.
Easier than calling M$ and waiting a hour on hold.

Well that had to happen.

Now as far as I see the response of WGA team towards Vista security, they say that the OEM hack performed on Vista(s) is recognisable by MS. They say that the Hack which is based on the BIOS signatures which the Vista OS would use to see if the installation is on an OEM machine, can be done by changing the code in the BIOS or by changing the software.

Since changing the BIOS is more sophisticated, complex, risky and cannot be deployed on a large scale, the software is changed to achieve the results and it can be very well recognized by MS. Counterfeiters will be charged if and when caught for this.

Hope that this goes towards where they point.