ABORIGINAL actor David Gulpilil has been found not guilty of carrying an offensive weapon after a judge accepted that the machete he produced during an argument was used for cultural purposes. The actor , who has starred in a number of films including Rabbit Proof Fence, Storm Boy and Crocodile Dundee, was arrested in July last year after an incident at a friend's house in central Darwin. The 2005 NT Australian of the Year was accused of grabbing his machete during an argurment. Gulpilil pleaded not guilty to carrying an offensive weapon during a brief trial in Darwin Magistrates Court...