I have the D70 with a 1 gig memory card that is approx. 50% full. I have downloaded images to my computer periodically. Last week, the "FOR" indicater appeared in the display window. I turned the camera off and on, and it seemed to correct itself. It has now reappeared, and I am instructed to format the memory card. I don't want to lose some of the images on the card. Anybody have any experience on what may be causing the prob and could suggest some options, other than a card reader?