I got 10 up-votes for this answer 11 hours ago, but still no nice answer badge.
I know that badge awarding isn't instantaneous, but I think it should have been awarded by now.
However, I've just noticed that the none of the "Nice Question/Answer", "Good Question/Answer", "Great Question/Answer" etc. badges are on the site's badges page. Is this related?
Some badge scripts are working - I just got the "Scholar" badge for this question.
Now also posted on meta.stackoverflow.com