On Saturday and Sunday we reserved one room, just for sprints. There will be no sessions in this room. So feel free to use this and talk to others about you problemns and solutions and find out how you can help to make Drupal better. There is even a extended Sprint on Friday and Monday at Cocomore AG (Gutleutstr. 30, 60329 Frankfurt). You don't need to signup for this, but would be very helpful for us, if you could enter your name in the GoogleDocs list, so we can better plan.