China’s falling real-estate prices trigger protests, clashes, page-22

Yes we have all time low interest rates but many other countries have much lower interest rates, there is even talk of negative interest rates in the eurozone see here http://www.smh.com.au/business/markets/just-what-are-negative-interest-rates-20140606-39n6d.html

RBA have said that with the current interest rates they still have room to move lower but as mentioned they want to avoid fuelling the property market

To date for some time the inflation rate has been on target of 2-3% and hence interest rates have been stable, should the inflation rate increase the RBA may look to increase interest rates (ie slow down inflation) but the forecast is a further period of stable inflation.

RBA is also mindful of the current high value of the $AUD which has a negative impact on exports, higher interest rates would put pressure on the $AUD to rise where lower interest rates would help lower the value of $AUD.