Just reading through the latest PSM2 which I have something to comment about in a later news post, I noticed it said what was being banned from the Australian version of the game.

It says that the Australian censors have requested that both the new Burglary and drug-taking features be removed.

However the guys in New Zealand aren't such tight assholes and don't really care like the UK and USA, and furthermore, games bought from NZ work on your Aussie PS2, so if I were you make sure you get a copy from NZ if you don't want a censored one.