By the way, I think I need to add this to the 1D IV:
  • No Bug/recalls/free-service-due-to-defect after introduction



By now Canon should understand that quality is also important. IMO I think the birth of 5D II is not a mature one, since it has so many problems right out of the factory and need firmware updates one after another... The same thing with the original 5D's mirror and 1D/1Ds III's focusing system/mirror. Do it right this time, Canon.