Getting an error page whenever I vote right now. The site says I'm trying to vote on either a poll that doesn't exist, or a poll that I've already voted on.
But it isn't a huge problem, because despite what the message says, when I look at the page afterwards it actually has accepted my vote. It's just lying telling me it hasn't. Not a big deal, but I thought I ought to tell somebody about it.
Edit: Well, whatever it was, it seems to have gone. It's working as normal again now.