No bad news if you have a good knowledge.
I have just updated my PC today with microsoft update.
I downloaded the legit check file, re-started and it said that i had pirated version, open the hexeditor and changed some of the strings and it no-longer said that mine is pirated.( I un-plugged my internet cable before re-starting) :D :D
After that everything went fine on microsoft update :)

Microsoft is doing this for more then ayear and will continue to do it, but it does'nt effect who have the knowledge, i am using Internet Exlorer 7 Beta 2, Windows Defender Beta 2, which uses built-in legitlib dll in the installer for genuine check, i am not using genuine copy, so no big deal with that :) :) :)