Thanks a lot for searching for Bugs!
We'll publish an update, in which you can choose to remove or edit the signature, soon. That was already on our list
Got one. You probably should have failed certification for it too:
When I'm looking at any topic view (e.g the WP7 Soft Dev board here) the fields for Author, Last Poster[?] and Time[?] show up as : "Autor", "Letzter Beitrag" and "um".
Everything else seems to be in English but I haven't been though every possible menu combination.
I'll get round to regsiter on your forums at some point to post bugs there but this seemed quite an important one.