I shoot large RAW and medium JPG onto a Sandisc Extreme III 4gb card. Of late there have been instances where some RAW files in a sequence have not been recorded. For example, the first 15 images in a shoot will be both RAW and JPG, with the next three just JPG followed by the rest being recorded in both formats. Can someone please advise what might be happening here and what the solution is? Cheers