Time to send my E-M5 for repair (UPDATED) See post #21 for an update. Actually what I need is a sensor clean, but apparently once you're out of warranty it counts as a repair and the base price is $165 I'm also waiting to hear back about whether they'll address the LCD bezel crack out of warranty. Honestly I like the camera, but this sort of thing doesn't tend to inspire me to keep buying more expensive equipment from them. The actual mark on the sensor is itself a bit of a puzzler. I know it's been there for some time -- wish I'd sent it in before warranty expired. I don't know if it's always been there. I tried to photograph it but it didn't really work. It looks like some gunk is on the sensor, possibly a microdroplet or two of water dried on it? Can't tell and I'm a little concerned that it might be a blemish in the sensor glass itself. Maybe I'm just being paranoid. I tried a LensPen gently but it didn't do anything. Can't really press down with the IS mechanism bouncing all over the place. The only lens I have with enough magnification to capture it attaches to my E-M5 I guess we'll see what happens. At least I have my Sony to shoot with in the meantime.