jcjeant, it may be appropriate to define how you are using fault.
If the PF caused the crash it does not automatically follow that "He is at fault."
Why did he do what he did? If we isolate a training deficiency, a software deficiency, or some other deficiency then while the PF may have caused it he is not at fault for it.
several others, the PF was apparently the 38 year old co-pilot with over 4400 hours on type and a license allowing him to take over from the captain. The 32 year old co-pilot did not have a license to take over from the captain. He did have 807 hours on type. So my reading of this data from the June 2009 Interim Report suggests strongly that PF was the older co-pilot.
Of course, I'm not ready to "blame" either one of them, yet. It appears the cockpit crew may have reacted correctly per training and manuals and had an experience that contradicted that training.
I also note plaintive requests for experience flying ALT2 - I wonder how often A330/A340 aircraft fall into ALT2, how often they train for it, and, in only a semi-serious tone, is ALT2 survivable? It is apparently rare. (And, yes, some people appear to have survived it.)