It's one of those things that you think MS iddn't want to put in, but had to, so they made the text for it really small.

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If nothing else works, what about re-installing Vista? A re-install solves quite a few things, and if that doesn't work then a full format might do the trick, although it would be a very time consuming job, and you'd need to re-install everything.

I'd try the re-install, and if the problem persisted, I'd just carry on and ignore the problem, maybe get rid of my password or not bother with Hibernating.