When I read the GPL v3 draft the first time (well, I didn't really read it, just gallopped through it and then read an article explaining the changes ;) ), it sounded pretty reasonable to me. I actually was wondering a little, what that DRM-stuff does in there and it left a bad aftertaste. But I decided to think about those issues further, when I read the license completely. Well, Linus apparently read the license completely and can define that aftertaste some better, than me:

Torvalds says DRM isn't necessarily bad