A Brazilian judge issued an order Monday blocking the popular WhatsApp smartphone messaging application nationwide, the second such shut-down in six months.Judge Marcel Montalvao in the small northeastern town of Lagarto issued the order because Facebook, the owner of the service, failed to hand over information requested in a criminal investigation, reported news site G1.WhatsApp was previously shut down in Brazil in December over a similar dispute, before a higher court threw out the two-day suspension after about 12 hours.