I was out this past weekend with the OM-D E-M10 and was using the Olympus 40-150mm lens extensively. Two or three times it "locked up" after a shot. The screen went dark and no image appeared. Nothing worked on the camera except turning it off and on. The lens is under warranty but it's only barely worth sending in. Has this happened to anyone else here? The only other thing noticeable was how warm the camera felt, but that's normal for mirrorless cameras when shooting actively.