1a fast asleep:
Seems to me that everybody is very tight lipped about the source of the fire. By now a large number of people would have inspected the plane and it would be obvious where the fire originated, even if they cant ascertain why.
Boeing really need to quickly calm the world concern as a matter of protecting their reputation and the future of the 787.
Hear hear! I would only add that the entire aviation industry is harmed in such cases, especially now that there is essentially a global duopoly for the manufacture of advanced passenger jets.
Unfortunately, if you go through every speculation as to cause, in this thread, not one is likely to have a good outcome. A faulty coffee-maker? Yikes....that's arguably the most frightening of all.