Many schoolchildren in South Africa's northern Limpopo province have gone for months without school textbooks. There was money to buy them. There was also a contract to deliver the books. Yet they didn't arrive. Students and parents are furious with politicians of the governing ANC - and say the problem is due to mismanagement and corruption. They say the issue typifies the faults of the political system, and that their children have been the victims. Rob Walker investigates the mystery of the missing textbooks.