The Australian dollar slumped during the early foreign exchange trading session in Asia today (October 28th), with the high-yield currency weighed down by a rise in safe-haven buying.The Aussie, as the currency is known, was hurt by the latest national inflation data, which caused traders to reduce their bets on an aggressive interest rate hike.Speaking to Reuters, Stephen Walters, chief economist at JP Morgan in Australia, commented: "This number's just not bad enough to trigger anything other than a quarter point rate rise."Weak consumer confidence figures in the US also promoted a return to safe-haven buying strategies as the market became concerned about the prospects for swift economic recovery.Meanwhile, Jim Rogers, chairman of Singapore-based Rogers Holdings, told Bloomberg TV that high-yielders may continue to suffer against the US dollar as safe-haven buying resurfaces. He added that stocks and commodities will also be hit by a rally in the dollar.