Hi Andrew,
I had my final interview in Sydney just over a week ago - apparently you can expect to hear from them between 4-6 weeks after your final but from some of the other posts on this site it could be months.
How did your final interview go? I'm not too sure I did the best but I suppose you always fear the worst. When making the final decision, do you think they take your performance in all stages into consideration or mainly base things on how you go in the final interview?