I am enjoying my new RX1r greatly, to the extent that I have had time to use it. I am a firm believer in frequently formatting my SD memory card (after downloading of course). I am yet to experience a card failure or file corruption, and I can't help but think that this practice helps. I wish that the format function could be assigned to one of the buttons on the camera, but that never seems to be an option. Perhaps that is intended to prevent accidental erasures, but the formatting process usually requires an additional button-press confirmation anyway, so accidents would be unlikely. Just an idea . . .