Christof Maletsky, The Namibian (Windhoek), December 18, 2006 Windhoek - The overtime dispute between the Namibia Nurses Union and the Ministry of Health is turning nasty, with allegations of tribalism, political influence and even death threats being levelled. On Friday, Nanu Secretary General Abner Shopati opened a criminal case after a senior nurse at the Katutura Hospital was seen distributing a letter defending the Health Permanent Secretary, Dr Kalumbi Shangula. In the letter allegations were made that Shopati was part of a group of Kwanyamas in Swapo who wanted Shangula out because he was part of the so-called Omusati clique in the party. ... Nurses