Its a known fact that you are allowed to downgrade to XP under certain conditions and that MS then count your XP version as a Vista one in their statistics, to "falsify" their records and have Vista given a better face. I guess its no help that their promo prior to the Seinfeld one - "mojave" seemingly backfired as well.
May be, they should just lower their heads, have XP extended and supplied with updates for a while to keep customers happy and start from scratch for their Windows 7 project. After all, they can only do a better job...
*sigh* - I guess their only plus until Web 3.0 is, that most people rely on Windows in one way or another. Otherwise we would probably see far more Mac and Linux users, and less work for us guys from the HJT Team
