Not for me. I updated the firmware last month and went on 2 trips with the issue occuring numberout times. I only ever had 1 card in at any time, used a Sandisk CF extreme 32gb on trip 1 and SD extreme pro 64gb on trip 2. I was recording RAW + basic JPEG to the card. I am wondering is it the writing or RAW and JPEG simultaniously? Alternately, I saw on the web an issue in 2012 with D800s locking up when histograms and RGB info was being displayed. I did have the LCD displaying this info. Anyone else still having the issue?