Hi, Since I upgraded to Snow Leopard, I've been noticing that Preview does not display images. A box will open and the background will be there, but no picture. I can scan images, and the automatic preview image that pops up is blank. I can download images from the internet, and they will appear as icons on my desktop, but when I double click them I get an appropriately sized blank Preview box. I can save the image to a thumb drive and put it on my girlfriend's computer (we run identical iMacs, for reference), and it will appear on her computer, but she is using the Adobe suite. Has anyone else been having this problem? Is there an easy fix for it that I am missing? Or is there a difficult fix that I can work through? Thank you for any help you may be able to provide!