cove is right on pointing out the different push and pull factors on the AUD and on property prices. He is correct in pointing out that overseas buyers are buying in Australia not only for the educational and lifestyle benefits, but the relatively low soverign risk of investing in residential property in Australia, and the push factors of many Chinese to get their money out of China as soon as possible. I am sure there are others whom would know more but a large scale Chinese government "crackdown" on people whom have been successful and whom may not want to toe the party line or whom may see a property bubble about to pop in China want their money as far away from China as possible, but in a place that is useful and safe in the future. i.e. the AUD is not just being bought to purchase iron ore, coal and natural gas but also property.
You also have to look closely at various markets in Australia, Sydney is well and truly into a property bubble, Melbourne less so, and the rest of Australia is a very different and mixed story. From a pure economics point of view the price of property needs to come down as money increasingly becomes tied up in an unsustainable inter-generational ponzi scheme and diverts money from being invested elsewhere to fund expansion and investment in more productive parts of the economy. If prices continue to rise we can expect to see young people exiting Australia faster than people from overseas coming in, when we see that rational response to an irrational property market then we know that only 2 things could happen, government intervention to slow the property market either by expanding supply or restricting ownership and/or negative gearing or a massive property bubble busting (a large bubble busting can take up to 20 years to work through the economy as Japan found out). Actually there is one other lever that the Australian government still has - by increasing or decreasing immigration and the birth rate here in Australia to affect the nett demand for housing in Australia.
The interest rate differential between effective 0% interest rates in Europe, USA and Japan/Korea and what interest rates here are in Australia also make parking money in Australia quite attractive and hence the stubbornly high AUD while the rest of the developed world try to get themselves out of the GFC by turning on the printing presses. The RBA really can't do much about this except possibly reducing interest rates in Australia.