Something is hinky with the upvote and downvote buttons (for me at least). When I press one nothing happens. Repeated pressing doesn't seem to do anything, but then sometimes the button colours-in after a delay. Sometimes it doesn't look like I pressed the button and then when I refresh the page I see that the button is coloured and the vote did register. Anyone else have the same problem?
Previously, the interface responded immediately, but the vote wasn't immediately applied (if you reopened the same post/comment, you wouldn't see your vote for a while). Sometimes, a vote would be lost, never applied, even though it was reflected in the interface. It looks like now the interface waits for the vote to actually get received, and only updates once it has been. As before, it takes a while for that to happen, and sometimes it doesn't happen at all, but the difference is that now this effect is apparent.
If this delay can't be easily fixed, an animation indicating that the operation is in progress (like one appearing when sending a comment) might help with the interface responsiveness issue.
If it's worth saying, but not worth its own post, even in Discussion, it goes here.