I am from Australia and I am white and I find people to be pretty casually racist in Aus. Most of the time it is a bit more subtle like the old "Asians are bad drivers" thing but sometimes it is pretty blatant like the "f*ck off, we're full" stickers that you see on half of the utes driving around.
Before I moved to HK I had a Singaporean girlfriend and on multiple occasions she would be ignored by staff at stores when she was trying to ask them for something and I have had the odd "how much?" comment from douche bags passing us. This stuff gets worse the further you drive out of the city centre.
I also worked at a call centre for an Internet company and the amount of racist crap you hear every day from customers that call up and get someone with a non-white accent (the customers never usually say anything when they get a South African or Kiwi accent) is pretty shocking. Particularly with customers from Queensland, WA and rural areas.
So I think racism is alive and well in Aus and those recent incidents are not a shock at all. I also think a lot of racist Aussies don't think that their attitude is racist hence they would not be honest when asked a blatantly racist question like "would you want people of other races living next to you", but sure would complain about their non-white neighbours if they have any.