Strange duplication of drawing when manipulationg bones

I just rigged my character and there was some strange duplication of drawings when I started animating them as you can see in the attachment. I have checked and I don’t have any extra drawings except the ones in the skin layer of the skeleton. Any ideas why this would be happening?
Edit: This happens only when I’m not on the first frame and the ‘shadow’ image sometimes follows the original around but with some delay behind it.
Edit2: Just exported a snapshot and the duplicate doesn’t appear there.
Edit3: OMG just ignore me… I had onion skin turned on…