I was at Devoxx
(formerly Javapolis) today. Besides wandering around in the lobby (I prefer to talk to people there rather than listening to talks), the only presentation I attended was on the SpringSource dm Server. Joris Kuipers did a nice job on explaining how the OSGi modules work (I think I got it - more or less;-)
Tomorrow (Thursday) I will be there too - so if you are around just make sure to say hi!