I don't think these have "crashed", but they have been on my watchlist since time immemorial - they keep changing agents, or simply readvertising as "new"! (feels like some have been on the market over a year?) :)...
Properties with big land components (and big price tags) seem to move pretty slow....
http://www.realestate.com.au/cgi-bin/rsearch?fslm=1&a=o&id=103989753&t=res
http://www.realestate.com.au/cgi-bin/rsearch?fslm=1&a=o&id=103949875&t=res...