The video from my sVirt (MAC security for Linux virtualization) talk is available as an OGG file. I've also re-uploaded it as a google video.
LCA was a genuinely enjoyable conference: laid-back and really well organized, with a good balance of talks. One really great aspect was the way internet access was provided to the accommodation, which at least in my case, worked perfectly, with a microwave link from UTAS connected to the hotel's internal wiring. I often need to work during conferences, and having good network access is probably my top priority in selecting accommodation.
I was glad to be part of the security miniconf organized by Casey Schaufler, which brought together folk from the kernel security community and various highly technical folk. There were talks from several leading security developers, including Casey (fs capabilities and rootless systems), Russell Coker (standing in for Kaigai Kohei on SE-postgresql and web application MAC), and Kentaro Takeda (TOMOYO). The miniconf concluded with an open panel discussion which was covered by LWN. For reasons I can't quite recall now, I ended up doing an ad-hoc presentation on Fedora Kiosk Mode, which I think helped demonstrate some of the progress SELinux has made in terms of usability and extension to general use scenarios.
Also see my flickr photoset, and a short video of one of the exhibitions from the Batteries Not Included art exhibition, which ran as part of the conference.
LCA 2010 will be held in Wellington, New Zealand -- here's an amusing video by the organizers. I hope to make it there.