Guys,
The mid-atlantic A340 zoom climb has little bearing on the AF447 accident. Try reading the reports.
The high speed protection was triggered by turbulence and the aircraft did what it was designed to do.
The AF climb was pilot induced, it's there in the report quite explicitly. Why the pilot made nose up inputs is the real mystery here and it may possibly have something to do with his airspeed reading.
The high speed protection was disabled when the aircraft went into alternate 2 law and was never available.