on the normal single event page - below the title - we have the usual wp "posted by ... in ... at" box.
In events manager the displayed date is not the posted date but the actual event date and the category for "posted in" is empty. The month is actually in english rather than German like my normal posts (March and not März).
Please see here: http://www.der-backnanger.de/events/7-belinda-party-in-oberrot/
I hope I made myself clear enough: Normal wp posts are fine, only event posts have this issue.