The animation of the URL of Bug 376797, http://home.comcast.net/~unclespongehead/BoardmanAnimated.html has regressed further. Now it doesn't even replay the animation after a shift+reload. The only way to replay the animation might be to restart the browser. Regression range is http://hg.mozilla.org/mozilla-central/pushloghtml?startdate=2008-09-04+04%3A00%3A00&enddate=2008-09-05+08%3A00%3A00 so I think it is from Bug 430061. I don't know if this will be fixed by Bug 129986 (and if so, when); hence I'm filing this bug.
Joe caused this, apparently.
Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.3a2pre) Gecko/20100228 Minefield/3.7a2pre Shift+reload is working now.