The pictures I had on my computer have changed. The image size had changed and they have little squares in them. I have to increase the size to make them clearer. I did nothing I am aware of that made them change. Any ideas how this could have happened? The new pictures that I loaded on my computer from the same camera are clear as a bell. I opened them with different programs and still distorted. How can I fix this without going through every picture? Could it be the program? Help. Thanks.