Well... I am sure some banks have 'hidden' losses from Bond Trading i.e. they bought Bonds to re-sell but now prices have dropped so they are 'hidden' in the Hold To Maturity pile.
Instead of lending these funds at 15%+, they will get only 5-12% on them. If they sell them, then they may have to take losses!
Greedy when others are fearful. Very fearful when others are greedy - to paraphrase Warren Buffett