In reply to Andes:
I climbed the Ferrari route in"96" with an American, as a preamble, to guiding it and I had a bad feeling about the very large serac/cornice overhanging the route, because it had not fallen it was presumed safe, when I reached the ridge my fears were founded there was a huge crack in it along the length of ridge, it is a bizzare feeling abseiling rapidly down, knowing full well that it could go at anytime, on a route considered objectively safe by many, particularily those earning a crust from guiding it and possibly a tad blinkered, there were also a couple of guys killed on the French direct, back in the eighties when a cornice fell.
I approached it with climb as quickly as possible and spend as little time in the fall zone as possible mantra, fully aware of the risk.