Taken from RTE News website...
"French air safety investigators have said they are not optimistic that the black boxes from the missing Air France jet will be found.
And the director of the Office of Inquiries and Analysis, Paul Louis Arslanian, said that even if the flight data recorders were recovered, they might not explain the cause of the crash."
Why is this attitude being taken by the investigators? It almost sounds as if they are not willing to try too hard. Surely, they should be resolved to get to those boxes to try to determine the cause of this accident. I'm sure ( as said previously) modern technology is up to the job if the money is made available.