According to this article Microsoft now considers udgrading the motherboard and processor to be a new computer and requires a new license. If this turns out to be true you can bet on some serious backlash. That seems like a smart move... piss off the enthusiast community. I guess if you secretly want to see Linux become mainstream.
I will post the link here:
http://www.guru3d.com/newsitem.php?id=3634
I will post the link here:
http://www.guru3d.com/newsitem.php?id=3634