Concerned about mounting levels of Australian personal debt, Malcolm Turnbull has cautioned the population against borrowing large sums of money. The prime minister insisted that while he doesn’t want to tell Australians what they should and shouldn’t do with their money, they should be “prudent” despite record low interest rates. “It’s not for me to give lectures on household finance but I think most Australians are very alert to the fact that while interest rates are low th