We switched software
Due to vacation time and some busy work stuff it was quiet lately, but we are going to change that and are currently discussing about a posting schedule. In the meantime i finished the first version of our django blog and switched the whole site. If you experience any drawbacks, let us know (support at codeboje dot de).
The new system is called sergio and is running on django. See Our Journey to a blog with django - Part 1: The Requirements and
Our Journey to a blog with django - Part 2: The basic Model for further information. In the next days i'll write a summary of my coding experience between Part 2 and the live version.
The source code will be released in the nearer future as i am not sure yet about licence and svn hosting.