I visited the zoo to take some photographs today, and 5 out of 1166 of my shots came out like this: <a href="http://www.flickr.com/photos/johnshare/6160234907/" title="zoo 2011-09-18 by awatahurm, on Flickr"> "500" height="375" alt="zoo 2011-09-18"></a> I was shooting "Large Fine + RAW" and this only happened to my raw files. I've never seen this before. But then again I was shooting a lot of back-to-back sequential shots (because those dang animals kept moving). Is this normal processor lag? Or is there something wrong with my camera?