I got back from a weekend trip yesterday and when I unloaded the images from my SD card, I noticed there were a few missing. Once I took a closer look, I discovered that my memory card had been reformatted about 5 hours into my trip - all earlier photos were gone. Now fortunately most of my photos were taken after that point, but I still lost around 60 or so images. More to the point, I certainly did not select to format the card. The only explanation I can come up with is that the camera's on/off switch somehow got toggled to 'on' when I was walking and the camera rubbing on my shirt caused the right (wrong) keys to press and to cause it to format. I've certainly had problems with the on/off switch turning on in the past with no intervention, but this is the first time the consequences were worse than just resetting the AF points or changing the ISO to 6400, although those are still quite annoying. In short, I take back everything mean I said about the E-M1's on/off switch. As unergonomic as it is, at least it's guaranteed not to lose anybody photos. That feature is reserved for the E-M5. (Lest user error be blamed, I should add that I have hiked with a great many digital cameras and excepting the E-M5 not one, not even the notoriously unstable Kodak SLR/n, has managed to spontaneously reformat a memory card for me) On a related note, any recommendations for image recovery software for ORFs on a SanDisk card?