2013/01/25 07:01:45 WARNING (ElementSaver): 70013074.osm.pbf:   Way null (http://www.openstreetmap.org/browse/way/161455663) has short arc (4.13m) at http://www.openstreetmap.org/?mlat=30.23438&mlon=120.11928&zoom=17 - but it can't be removed because both ends of the arc are boundary nodes!