Deciding to skip a session on fingerprinting near the beginning (David indicating there was no technical solution made me less interested) I saw Rafael in the hallway and together, later including Adam, we drafted some notes on how to fix a rather tricky bug with respect to mutation record queueing.
DOM: mutation observers should now reflect the changes we discussed and be in line with WebKit and Gecko their implementations. Now we just need Microsoft and Opera to join the party and kill off those pesky mutation events.