In currency trading the Asian session today (12-10), seen the AUD currency weakened against the U.S. Dollar. Pair AUD/USD when it was observed to move in the range of 0.9800 than the opening price this morning at around 0.9838.This morning has been released data Australia NAB Business Confidence for the period from September 2010, where the index recorded a slight decrease to 10 compared to the previous period amounting to 11.Technically, the AUD remained bullish. Weakening that happens quite reasonable considering the AUD hung in overbought zone in a long time.