IP Australia has just released its full text searching service.
Apparently it has full service functionality and includes about half of the patent collection. The full collection is to be made available free of charge by the end of March 2011.
As I've mentioned before, this is really good news. For one thing, due diligence investigations will be a lot easier.
Here's the link: http://www.ipaustralia.gov.au/auspatbeta/