I just ran into this question and thought I'll post it here to see what others think.
My personal opinion is that it doesn't, and here's why:
I've advocated many things not so long ago which I no longer do or in fact advocate the opposite.
A couple of years ago I would probably easily dismiss the idea of trying out a new version of Windows on the basis of a Free Software ideology or the chorus of voices of Free Software or Open Source f
I just installed Sun's virtualbox 2.x and had an extremely easy time installing XP Pro.