Nomura looks like a place that does not do enough due diligence.
Bloomberg: Nomura Has 27.5 Billion Yen at Risk Linked to Madoff (Update2)
Reuters: Nomura says has $303 mln Madoff-related exposure
Associated Press: Nomura: $306 million in Wall Street Ponzi scheme
AFP: Nomura says it could lose 302 mln dollars in Madoff scandal