FrOSCon 2009 was a nice break from the stress at work, replacing it by stress in the weekend. The atmosphere was nice as usual and the planning good as every year. And with Andreas Scherbaum playing airport- and venue taxi the transportation didn't leave any room for improvement ;).
A few of the things that stuck with me were
Virtualization & Cloud Management
There's a lot of stuff going on in the Virtualization world, since by now everybody noticed that just hypervising things doesn't cut the slack and that you need to manage the stuff you deployed somehow. Which is a good thing, by the way.