An Easyjet Switzerland Airbus A320-200, registration HB-JYJ performing flight DS-1454/U2-1454 from Porto (Portugal) to Geneva (Switzerland) with 141 passengers and 6 crew, was enroute at FL360 about 110nm southsouthwest of Clermont-Ferrand (France) when the crew decided to divert to Clermont-Ferrand . . .