> I am curious if setting this enviroment variable changes the firefox > behaviour in this case: > > MOZ_DISABLE_IMAGE_OPTIMIZE=1 Sadly, it doesn't change a thing. -Stefan -- BAUR-ITCS UG (haftungsbeschränkt) Geschäftsführer: Stefan Baur Eichenäckerweg 10, 89081 Ulm | Registergericht Ulm, HRB 724364 Fon/Fax 0731 40 34 66-36/-35 | USt-IdNr.: DE268653243