We have a Mac with iPhoto. I took a ton of pics of Sophia on her 1st birthday. When I uploaded them to the computer, they were weird. On the screen some of the little squares (before I actually click on a pic) are distorted. Then when I click on one, it's a different picture than what was on the little square. Does that even make sense? I have notice it a couple more times more recently. Is it my memory card?