The logo of French bank Societe Generale is seen outside one of their branches in Paris in this January 29, 2008 file photo. Shares in French bank Societe Generale fell more than 21 percent on a whirlwind of market rumours August 10, 2011, before a spokeswoman categorically denied all rumours relating to the bank's financial solidity. Picture taken January 29, 2008 REUTERS/Charles Platiau/Files (FRANCE)