phantom posts in moderation queue

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Recently, http://ask.fedoraproject.org activated moderation because of a persistent spammer, and I became a moderator. Even after I'd dealt with everything in my queue, I'd be told that there were still posts to moderate and the number gradually grew. Now, moderation has been turned off but I'm still being told that there are 46 posts to moderate, although nothing shows up. How do I get rid of them. (From what I can tell, none of the other moderators are seeing this.)