I asked a question on Richard Lynch's web site, and he provided a prompt answer. Basically, I told him that I had a question of why Photoshop would use the scratch disk at all if plenty of RAM were still available. Here is his answer:

Ed

I couldn't open the attachment. Did I do something wrong?

Ed

Ed, I was able to open it just fine. Interesting info - I've got a few things to check out on my system. Thanks for posting it.
-Jeanie

Gee...I am posting and I'm not even here!

Ed, thanks for the follow-through...saves me the trouble.

Richard,

We're all very thankful for your reply. I'm sure there are quite a few people who might be interested in this.

Ed

Holy Moly, that's what I call a reply. Richard, I don't think you're going to need to write a new book, just keep posting all that kind of info here. :D Thank you for taking the time to respond so thoroughly and Ed for sharing it with us. I will have to read it in depth when I get done here.
DJ