MONTREAL, Nov. 23 -- A C$6 billion lawsuit has been filed in Ontario Superior Court of Justice against BCE, Canada's largest communications company, and against seven former directors of Teleglobe Inc., a former subsidiary of BCE, by Teleglobe plan administrator Kathy Morgan. Morgan wants a formal declaration that Teleglobe Inc. and its creditors have been oppressed by the former Teleglobe directors and by BCE within the meaning of the Canada Business Corporations Act. 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