Hi Minorite invisible,
I have a copy of QRH 2006 for A320 series and there is NO Stall Warning procedure. The closest is "Low Energy Warning" which basically says:
"The Speed Speed Speed synthetic voice is triggered every 5 seconds , whenever the aircraft energy goes below a threshold under which thrust shall be increased to recover a positive flight path angle.
_Thrust Levers.... Push
Increase the thrust until the warning disappears."
The Stall Recovery QRH was introduced in May 2010.
Could the crew of AF447 have confused "Stall Stall" synthetic voice with "Speed Speed"?