I resurrected the Mobile StadtPlan application. I died due to account lose on a powerful server and the the replacement of iceberry...
It's not back online based on Java 6.0, MySql, AutoTrace and Spring.
If anybody wants to continue working on it, please feel free to contact me. Most important: get a SourceForge project for it and start talking to Stadt Wien again to obtain vector graphics instead of the images.