I'm surprised to see unmapped villages in a so well mapped neighbourhood.

http://resultmap.neis-one.org/?zoom=16&lat=50.01538&lon=9.01206&layers=B0FFFTFFFFFFFFT

Sadly the history function on the main site doesn't hint easily at what happened, there.

Just bumped into it while browsing. I wonder how that has happened...

Ohh, wanted to reply with how great osm is to:
http://www.advogato.org/person/company/diary/140.html

but our routing ain't any better:
http://openrouteservice.org/index.php?start=2.1703813,41.3800703&end=2.1739861,41.383242&pref=Pedestrian&lang=de&noMotorways=false&noTollways=false

edit after ages: ORS moved, meanwhile there is a route, seems to be over ways not areas.