Well, the aim of the Linuxdays in Luxemburg is to promote and support the Open Source & Free Software movement. The basic idea of Open Source & Free Software is that developers around the world distribute, modify and test their software via the Internet, resulting in products often exceeding the quality of commercial software. The power and cumulated knowledge of the Open Source & Free Software Community ensures that new features are implemented very quickly and that bugs are fixed the moment they are discovered.
CAcert Assurances will be possible there.
More Infos for Assurers and people who wants to get assured: http://wiki.cacert.org/wiki/LinuxDaysLU2008