I haven't had many problems running games on Windows Vista/7, but the times I did have problems were extremely time consuming. I'm talking in the range of 10+ h

I haven't had many problems running games on Windows Vista/7, but the times I did have problems were extremely time consuming. I'm talking in the range of 10+ hours. Bioshock 2, for example, was plagued with the Games for Windows Live, which itself would only work with particular .NET runtimes you had to find yourself, plus very subtle sound driver configurations that had to be made (and I still can't get the game to run through Steam). 99% of games work out of the box, as expected. That 1%, though, is quite a headache.