Here’s a quick tip if you are using Windows XP. I was running Adobe Flash CS2 or Photoshop CS2, and I picked an odd resolution for my square (non-widescreen) monitor. The resolution I was using was 1152 x 864. Well, whenever I would open up a picture in Photoshop or try and modify the document size of a flash project, my computer would lag for about 30 – 45 seconds. What happened a couple days ago was that I was making some changes to my computer and it ended up automatically switching my resolution to a more standard one of, 1280 x 1024. When I was running that resolution my files loaded much faster and I was able to adjust my document settings and project sizes in Flash quite quickly. Another thing to note is that I use an nVidia Geforce 7800 GTX graphics card, so this issue may be hardware dependent.
-Tyler