Hey guys. I hate to report this, but I am noticing one issue in our beloved E-M5. I just noticed it this weekend when I extensively used the camera. I noticed that the camera sometimes locks up. When the camera sleeps and I try to wake it (by pressing any button), it doesn't wake up. Even switching the 'on/off' doesn't do anything. I need to remove the battery and insert it again for the camera to go back to normal. It happens to me like around 10 times already just this weekend. It only happens when I'm using the 20mm. I didn't experience it when I'm using the 12-50 kittens or the 45mm. I'm still investigating this issue. I've read somewhere that some users here in Japan also have similar issue. I hope it can be resolved by firmware update. Will let you know my findings.