So this has happened twice now in the last week. I have a new 2011 iMac and after taking photos with my iPhone 4, I sync them to the mac using Image Capture. I recently noticed that when I viewed some on my iPhone and iPad, that they are covered in a huge white block. Usually it is the picture, then about 10% of the top of it visible and the rest of the picture completely white. I seem to remember this happening a long time ago with certain pics, except it was grey instead of white. It is not all my pics. It is just certain series. For instance, I did some house work last week and wanted some before and after pics. The "after" pics show up just fine, but the "before" pics are displaying this problem. So it is not constant, and it has since worked fine so it is not only a recent problem. Also, they all work fine on my iMac. So I don't think they are corrupted in any way... Anyone have any idea what it could be?