Was shooting a cycle race yesterday and it was working great. Switched to another camera for 15 minutes or so, picked it up and I see a nasty 'smear' in my viewfinder and a few lime green 'blobs'. Ironically, I had just upgraded to firmware V4. Called the repair technician and he said the lcd in the viewfinder has gone .... happened to him too. Its a warranty repair and its on its was to them now. I'll get it back on Friday next. I mentioned my other EM1 has a small green cloud developing at the viewfinder and he will do that one in a few weeks .... he will order parts. Fantastic service !