Incident: LOT B763 near Toronto on Jun 19th 2009, severe turbulence and unreliable airspeed
This particular incident seems to have largely avoided media coverage.
One would have thought that considering recent events, a widebody aircraft forced to descent while experiencing severe turbulence and unreliable airspeed would be of particular interest.
I'm sure that if this had been from manufacturer 'A' rather than manufacturer 'B' there would be media hysteria.