I upgraded to 10.3 a fews days back. In 10.2.8, I used a folder that contain pictures I do for my business. There are 376 jpegs in the folder. All worked fine. Now, in 10.3.7, when I select the same folder, the "Looking for slides" notice comes up when I select the same folder but never "finds them". Is there a size/number limit in 10.3 that was not in 10.2.8? And, the folders listed on the left I can select from keeps changing. One time some iPhoto folders are listed on the left, the next time they are not there or they are different. In other words, Screen Saver option is messed up.