Mogul wrote:
Any camera maker will deny a defect until proof is shoved down its throat. Once the message got through to Nikon, they agreed to make free necessary repairs, although they stopped short of issuing a recall. By the way, if all you had done was cleaning the sensor, don't be too terribly disappointed if you experience a MINOR recurrence; the real problem is reported to have come from the mirror mechanism, which apparently made the cause of the problem hard to diagnose.