Enjoying the E-M5, but can't seem to solve this problem. I shoot in aperture priority mode, with single autofocus set to the center focus point. I spot meter. I use the focus-and-recompose method, and I DO NOT want the camera to second-guess where I want it to focus, EVER. When it's set to the center point, I want it to stay in the center, period. But maybe three times out of ten the camera decides to put the focus point elsewhere. I went to custom > AF/MF > Set Home and set the point to center--what else do I have to do to make it stay there for good?