JavaZone is a big Java conference in Scandinavia, and Hudson is well represented there. On September 8th, Håkon Snøtun will be presenting "Top 5 plugins for Hudson and Chuck Norris." and on September 9th, I'll be presenting "Getting more out of your Hudson."
But more importantly, what is a conference without drinking!? So in that spirit, InfraDNA will be organizing a Hudson User Meetup at The Scotsman from Sep 8th 19:30 (website.) We'll get together, have some drinks, and enjoy geeky conversations.