How strange Hi, what card were you using? I would have thought the Lexar I was using would be up to spec... maybe it's a brand thing. Interesting that it's happening on 250 as well - only happened with my 100fps shots, and yesterday was indoors, and cooler than the previous day out in the sun, when I was shooting much more regularly. If it only happens in the first second, I can plan ahead, anyone had it happen in the middle of a shot? Thanks Steve