Amidst all the speculations thus far, I find it strange that nobody has jumped onto a story posted much earlier by some-one who spoke to some passengers who were on the south bound leg of this A/C. He said they said there was a "black-out" during the leg, but all came right after a while. Now, was this problem snagged (reported) after landing, and released as "unable to duplicate snag"? Could this same "black-out" have occurred again, this time in or near a CB ? Whatever this black-out was, as far as I can remember, if one does get something resembling a "black-out" (any major system trip-off), it never was a simple problem...usually the start of a multiple failure of sorts. What if.......