[bets]

I also think it was software failure, which only failed due to a worm/virus. (otherwise, it should have stopped the overload, cascading effect, and should have done its programmed warnings)

[prarie earth]

Im amazed that this information has been held back this long.

[mabelkitty]

I heard something to that effect last Saturday from someone who works there. I got no details, but it was something to the effect that, "This was an impossibility."

Sounded like a hacker or virus to me.