I used to get all the latest pre-release updates, but one day my system tanked. The only solution I came up with whilst retaining my sanity, was to sign up and pay for Microsoft support. I'm not up to editing registry settings etc. Life's too short. Microsoft always do a great job and sort me out. I've just automatically picked up another year of support on the old credit card. It hurts but at least I know they'll work on it all night to fix something and bump it up the chain if it's too hard for them. I got bumped up 3 or 4 times on the big crash. Somehow I've fallen off the latest updates track... Interestingly, they said I'd have to reinstall everything and it was all there when I woke up.