Maybe this confirms my experience with a Sandisc 1Gb CF card which played funny b****ers with me last year. After two photo sessions which resulted in zero images, I binned the card in utter desperation ! Sandisc said the fault was highly unlikely to be with the card, and suggested I had my camera checked. Since then I have fitted a different make card, everything is hunkydory. Coincidence ??? I dont think so. I should have pursued the matter further but I was so p***ed off with losing valuable work, I just bit the bullet and bought a new one.