We are getting there. I go for today's Daily Mail theory. As an ex 744 jockey who has flown many sectors over Siberia in the winter and have had numerous eicas warnings of low fuel temp, I reckon this combined with possible contaminated fuel from Beijing and a low power descent would cause waxing/icing of fuel. I don't believe there was anything wrong with the computers and everything else seems to have been ruled out so my opinion is contaminated fuel. See, I didn't even get technical.
