Not Really
Hi.
I'm afraid I didn't really find a solution in the end. Resetting my local profile helped, but then I noticed that other user accounts on my machine were having the same problem, so in the end, I just decided to re-install Windows (or rather restore it from an image I'd made). Sorry that's not much help, but it was the quickest and easiest thing for me, as I have all my user data on a separate computer, so I can restore an image of my installation without giving it a second thought.
Sorry I can't be of more help, and good luck finding a solution.
David.