Ubuntu installation on a normal pc = 20 mins and about 5times less user input than Windows XP setup.
After these 20mins you have an installed OS, including the whole Office suite, Firefox, and so on...
To reach the same state with setting up windows, installing Office and the other software you need at least 2 hours
so that makes 2 hours vs. 20 minutes. I think that's a real painless user experience







