cool with the ideas for scratch disk and memory for Photoshop.
As for Quark...
I have personally tested this:
In 6 months of using Virtual Memory (On) and Quark, I have had, on average, 2-3 crashes a week.
Previous to this, I had my VM turned off and had Quark crashes once or twice a month.
Does Quark need VM? And if it doesen't, why does it cause confilicts?