OK, for those who did not follow the Online-Diary thingy...here is a short update:
On monday nobody appeared, so nothing happened, but today things went smoothly. We now have a whole new set of pictures. The concrete slab will probably be poured on tomorrow afternoon, I'll be there and make sure you get pictures.
For those who did not see the link before:
http://stadthaus-rohde.blogspot.com is where all the pictures and a running commentary (in german) can be found. You can also leave comments there.