I can't help but feel this lightning thing is a red herring. I mean, there have been ~600 A330's built since 1994, if all of those flew 12 hrs a day, that's more than 2.6m hours a year. Never mind all the other very similar Airbus aircraft flying around with similar composite parts. Never mind all the Boeing aircraft. It seems to be so unlikely as to render it almost impossible that a single strike could take down a transport category aircraft that it and it's counterparts have doubtless been struck thousands of times before with little to no effect.
Seriously, transport category aircraft get struck by lightning all the time, I bet there aren't many jet drivers out there that haven't been. Hell, I bet there aren't many frequent flying pax out there that haven't experienced it. It's not like the A330 is short or metal parts to strike either.
How many other Airbus aircraft have ever had difficulties following a lightning strike? How many have had problems with turbulence? Both are generally non-events.
I think we need to take a step back and wait for more information.
We are talking about a modern, well equipped aircraft, with a well trained, experienced crew. Clearly something is missing, I hope we get to find out what it is.