You kindly imported NSW Geographic Names Board places ( http://wiki.openstreetmap.org/wiki/Import/Catalogue#One-Time_Imports )
Can you give me a link to where you got the data? I am trying to track down the exact licenses used and possibly contact the organisation directly to clarify their view on continued use under ODbL.
Michael Collinson mike att ayeltd.biz
PS Nice to see your user page and work in the Ilawarra region, I only got as far as mapping the Kiama Blowhole and Princes Highway I think.