I've read all the threads on the issue at this forum as well as on dpreview. From what I see the problem can be solved on Pens' and E-M1 bodies by turning off the flicker reduction. However it looks like there hasn't been any solution for E-M5 (at least as for the end of December 2013). Right now I am torn between PL25 and O25, but I know the rattlesnake noise will drive me crazy (from what I saw on youtube). I really want PL25 but if there hasn't been any working solution for this problem I'd have to stick with O25. Does anyone know what is the latest word on the issue?