The answer at http://audio.stackexchange.com/questions/332/rule-of-thumb-for-the-level-of-pre-show-music-in-a-theatre/334#334 wouldn't let me vote on it yesterday; it said my vote was locked in unless the answer was edited.
Today, the same thing happened for http://audio.stackexchange.com/questions/436/any-reason-not-to-convert-wav-to-flac-and-save-some-disk-space/437#437
What's strange is, I didn't have a vote recorded. I might have voted and then toggled back to no vote; does that count? Whatever the cause, it seemed a strange situation.