Argentines swarmed around banks to buy U.S. dollars and many snapped up milk and meat in supermarkets to guard against rising prices despite a pause Tuesday in the peso's recent record tumble. But with the peso still down 26 percent against the dollar since Friday, speculation flared that President Eduardo Duhalde, the fifth leader of Latin America's No. 3 economy since December, could quit if a four-year recession coupled with inflation sparked a return to the violent food looting seen at the end of last year.