Lehman Brothers- Next Bear Stearns?

US financial body Fed is trying its level best to avoid another bear stearns by pushing Lehman Brothers struggle and overcome their losses. Read this in businessweek recently!!!
Well , Lehman bet on mortgage business has taken them into bad debt and now they are next bear stearns in making. Fed however is trying best to avoid this situation since that would take away all the trust from i-bank world.
Although, Lehman is smallest of top10 i-banks, its fallout could further worsen the global economy through ripple effects