Awwal 15, 1432 H/Feb 18, 2011, SPA -- Millions of Ugandans lined up to vote Friday in the east African nation's presidential ballot pitting the country's long-serving president against his former ally and personal physician, officials said. According to AP, opposition threats of street protests and the looming start of oil production have raised the stakes in the vote _ just the second multiparty election to be held in Uganda in 30 years. President Yoweri Museveni faces a record seven challengers.