It takes about twenty minutes on a Dell (which tend to be among the biggest purveyors of nagware). Forty minutes or so if you just saw screw-it and reinstall the OS, plus whatever time it takes for Windows Update to do it's thing. I get that you're a partisan, but can we not be completely hyperbolic?
I really like that when I install the evince pdf viewer, it doesn't try to install the Yahoo search bar browser plugin like Adobe Acrobat. I even use evince on windows.
