French novelist Tristane Banon is seen during the last day of the appeal trial of former Societe Generale trader Kerviel at Paris court June 28, 2012. Kerviel should serve five years in prison for his role in France's biggest-ever rogue trading scandal, a state prosecutor told a Paris court on Wednesday. Kerviel is appealing a three-year jail sentence handed down in 2010, as well as an order to repay SocGen 4.9 billion euros ($6.1 billion) lost by the French bank when it closed the trader's massive risky bets in 2008. REUTERS/Gonzalo Fuentes (FRANCE - Tags: BUSINESS CRIME LAW ENTERTAINMENT)