that spider is called the huntsman in aus'. It is acutally a peaceful spider, none agressive spider. They mostly hunt rats and other small rodents. They hang out in the grain bins waiting for their next meal a lot. And according to an aussie friend of mine, they do find their way into your homes. But she said all they would do is just get a broom and shoe it out the door.
Aus' is truly one of the homes to the biggest spiders in the general urban population. She mentioned there was one spider, who's picture i have at home, that will agressively attack humans if provoked. No joke! I will get the picture when i get home to post it here.
Actually i already had it in my photobucket as a motivational picture. Here it is. I can not remember the name of it, but it will actually attack and chase you. No joke!