Sometimes, completely randomly after any action in Photoshop like pasting an object from Illustrator or even something as simple as creating a new file, I get to sit and see the spinning wheel of fun for as long as a minute or two. This doesn't happen constantly, but enough that someone who uses Photoshop professionally and full-time gets annoyed. I'm on a Mac Pro quad 2.66ghz with 4gb RAM, over 350gb hd space available.... so what gives?? Photoshop is allowed over 2gb or RAM. sometimes it happens with large files, sometimes with small files. Frustrating part is, I recently upgraded to this machine from a G5 and there are times when I forget that I'm even on a new computer. Shouldn't I be noticing significant differences in speed as well over the G5?