Sander van Vugt sounds like that he's done this talk before. Normally he tries to get 3 hours for this talk, but he's only got 20 minutes. He wrote a book ('A Practical Guide to Xen HA', he's happy to email a pdf of the book. He's written a bunch of other books as well.
Andrew Bartlett talking about Samba 4. They have implemented read only Domain Controller support. Apparently it is harder than read-write, but they are thinking it is a safe way to introduce samba4 into an existing Active Directory network.
Julien Goodwin spoke about a brief history of time sync. He started off by mentioning some mechanical clocks, and moved onto quartz crystal oscillator chippy things. Apparently a server keeps pretty good time because they are in a temperature controlled environment, and those chips are fairly temperature sensitive.
Vint started out by saying he wants to persuade us that the Internet today needs to have some evolution, and that it isn't to late to do so. He did a brief review of the history of the Internet, from it's arpanet days of 4 nodes, to somewhere around 1 Billion nodes today.