Never say never with the possibility for a computer to go nuts in a FBW aeroplane. Boeing said that the 777 could never have a simultaneous overspeed/underspeed indication yet one did (off the coast of WA ironically). The ATSB has sent a team of 8 (according to the media) which is more than they sent to Manila. The media is quoting a spokesman from the ATSB saying they are looking at similar events. There is possibly more to this than a straight forward CAT encounter. And for those saying that people should stop speculating, then maybe they should start the "Absolutely Factual No Speculation Pilots Network".