In Iceland four former bank chiefs have been jailed for fraud - the sentences go as far as five years behind bars. They're accused of concealing that a Qatari investor bought a stake in their firm, using cash lent from the bank itself - illegally. The deal took place just ahead of the collapse of the bank due to huge debts. That's good, fraudulent bankers should go to jail.
All the silly claims you've linked said bankers were arrested for causing the crisis. How did these crooks cause the crisis?