I haven't seen it reported anywhere. It was my machine that found the key. To commemorate the event a plaque was made and permanently attached to the case. If it is still in the archives somewhere, the plaque lists the key reported as found by the client, which you would see is one off from the actual key that was the solution.

I never asked the distributed.net team, but I always suspected this was intentional to maybe thwart people from front-running a submission, so not truly a bug. If Adam, Jeff or David read this, maybe they could chime in.