Well it installed fine on my computer, but I don't see the cool new Aero look.
I've got a plenty powerful computer so it should work.
Spent 1.5 hours on the line with Microsoft support to no avail, hence the rather uninspired photo.

Update, Feb 3: Had a decent video card (X800 GT, 256MB), but apparently it was not good enough.
I bought a new one today and all is fine.
Now I'm in the process of migrating all the programs and settings.