FrOSCon is a two-day conference on free software and open source, which takes place on 24th and 25th June 2006 at the University of Applied Sciences Bonn-Rhein-Sieg, in St. Augustin near Bonn, Germany.
The Call for Papers ends on March 15th - so you better hurry if you want to give a presentation there! I proposed two MySQL-related talks and also asked some other colleagues to file a few submissions. There is enough stuff happening here to talk about
By the way, their registration frontend is very slick - it's called pentabarf (which I personally think is a weird name) and is powered by Ruby on Rails.