MacOSX: 8 years of Innovation and Open Source
Jordan K. Hubbard - I've been bugging Jordan for ages (sure feels that way), to come to Denmark to speak about his work at Apple where he is combining his immense FreeBSD and Darwin knowledge. OS X is sharing a good deal of code with the FreeBSD project and Jordan was one of the original co-founders and core team members of FreeBSD and in my book that degree of knowledge makes someone worth listening to.
How to become a Puppet master
Have you ever heard of Puppet? Puppet is a mass scale systemadministration tool written in Ruby - its author Luke Kaines (Reductive Labs) used to be one of the core developers for the open source project CFengine. We use CFengine extensively at DIKU for the administration of our UNIX server park - but sometimes we get a little tired of the way CFengine does things. Puppet has a fresh view on things - and once in a while its really healthy to stop in the midst of all the "that should have been finished yesterday" - and contemplate whether things could be done with a little more cleverness - Puppet is one of those "wait a minute - thats nifty". While checking out Puppet I stumbled across a very interesting podcast from RedMonk featuring Luke Kaines and Nigel Kersten from Google. And I had hardly finished hearing it, before I was trying to figure out - how the hell I could get hold of Nigel and persuade him to come to Open Source Days - it turned out that Nigel is a big fan of Lego - and what better place to visit than Denmark 
Anyway Nigel's talk is for me considered a MUST.
One account to rule them all - OpenID
You know the feeling - you jump to a webpage, you need to download a piece of software, just to try it out, and you are yet again asked to create an account and enter your e-mail etc. *sigh* - yet another useless account. OpenID tries to rectify that by lowering the user frustastration level and giving the control back to the user with a Singe-Sign-On OpenID account. OpenID is an open, decentralized, free framework for user-centric digital identity. OpenID is a young project, but it got a huge backing group in very short time, which makes its chance of survival pretty damn good. One of the companies that's begun using OpenID is Zyb - a service to keep an easy accessible on-line copy of the contacts from your phone. At Open Source Days, we have 2 OpenID speakers - one Friday morning and one Saturday afternoon, but on Saturday there will also be a lightning talk on the topic and a booth in the user group community area. Lots of possibilities to gain more insight to OpenID.
The once and future Roller
Another talk I am really looking forward to is developer Dave Johnsons talk on Apache Roller. Apache Roller is the software for mass scale blogging sites - Suns own blogs.sun.com is running on Roller and it's one of the worlds biggest corporate blogging sites with 5000+ bloggers. Apache Roller graduated from the Apache Incubator in March 2007 and is now considered an official Apache project. Roller was originally written by Dave - which means, that at Open Source Days you have a chance to hear about the past and especially the future of Roller from the guru himself! Apparently support for OpenID has just been added to Roller, thanks to Googles Summer of Code 
Apache Roller is a case story on open source development worth listening to!
My new favorite color? Chrome of course!
Do you want to hear one of Denmarks own Chrome/v8 cartoon heroes Kasper Lund? It's just been settled that Kasper will give a talk on Saturday October 4th on the development of Google Chrome/v8 - and the inner workings of the javascript engine that makes it so damn fast.
I hope to see you at Open Source Days - its always worth spending 2 days with like minded people and getting recharged with new ideas.