Hmmmm, judging from all the people are having upgrading, I think I've been pretty lucky, everything works fine for me except TomTom, which is a compatibility thing anyway.
It was a bit slow at first but a soft reset did the trick, also I've noticed that if I leave it for a few secs after a reset it works better than if I start using it straight away. It seems like it's still doing some processing even though windows is loaded.