I was just on this question (What is wrong with this?), using OSX 10.7/ Chrome 19, and the vote numbers kept 'flickering' to different numbers 4-6 times a second, usually within +/-2 votes from what it started at. There was no change in the expanded vote count, and this happened with the questions vote count and some of the answers vote count as well.
Just for clarity's sake, the question's vote count changed from 2->3->4->3->4->2->3 every second, for 1-3 seconds. Even after refreshing the page, this still occurs. It starts intermittenly in the first minute or so of page load