FACEBOOK has taken down a network in Uganda linked to the country's ministry of information for using fake and duplicate accounts to post ahead of this week's presidential election, the U.S. social media giant has announced. Ugandans vote on Thursday in an election pitting long-time leader Yoweri Museveni against 10 candidates including opposition frontrunner Bobi Wine, a singer-turned-lawmaker whose star power has rattled the ruling party. "We found this network to be linked to the Government Citizens Interaction Center at the Ministry of Information and Communications Technology in Uganda," Facebook said. "They used fake and duplicate accounts to manage pages,…