File photo taken on April 22, 2009 shows the former president of South Africa Nelson Mandela (C) casting his vote at a polling station during the election in Johannesburg, South Africa. Former South African President Nelson Mandela is in "serious but stable" condition after being taken to a hospital to be treated for a lung infection, the government said Saturday, prompting an outpouring of concern from admirers of a man who helped to end white racist rule. [Xu Suhui/Xinhua]