There has been a lot of discussion on plasma screens on these forums, particualrly on the longevity of the screens. Now, plasma has been around for quite a while now - who has the oldest plasma out there ? I'm sure there must be a few people out there who have owned a plasma for a while. What make/model is it ? How many hours has it clocked up ? How bright is the screen now ? How many pixels have died ? Any other comments ?