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Not allowed to rate down?
Lately, whenever I've tried to vote a story as Mary-Sue/Illiterate/Etc., it's not letting me, saying it's already been voted down.

However, when I refresh the page, the story still has a zero rating, and doesn't change even when I refresh at a later time.

Is it an error on my part, or coding issues?
I think somebody mentioned ratings are only being tallied once a day to prevent CPU usage from climbing sky-high. It might show up tomorrow.
The same thing just happened to me. I tried to rate an unrated 'fic and I was told that it would put the 'fic outside the range.

And this one has been up for a long time. It would surprise me greatly if someone else were rating it.
Okay, it's a week later and I've tried again. Still no go.