Requires two clicks to vote

I'm having a strange problem at http://www.tonelab.net.

After the fist vote has been cast, no matter who veiws it, it says "My Vote" instead of "Rate This" even if that user hasn't voted yet. Then if the user votes, it says "Saving" but it doesn't update the average. If the user clicks a second time, it works, the vote is actually saved, and the average is updated.

You can log in with
username: user
password:password
to test it out.

Thanks,

Broc