Photoshop can be a very moody program to run, especially when it comes to scratch disk issues. I started this thread for Sharon, but thought other PS users could benefit also. A couple of links to get you started thinking about how to optimize that area. This link talks about how to check what the scratch disk size is set at...and roughly how to calculate what it should be "to effectively "play" with a 25 mg image, you should have about 100- 200mgs of free harddrive space. " Another lLINK I found talks about how to setup up where the scratch disk is located and how important it is to keep that drive defrag'd. When you get to the Preferences menu in PS...check out the Memory and Image cache settings...make sure you have enough system memory allocated for use by Ps...Remember its a memory hog and wants all it can get its hands on..But when given a ton of memory it runs flawlessly. As I find more I'll add to this thread.