Frequent Photoshop CS4 Crashes in 10.5.8

Question

I would love some help with the crashes I’m having when using Photoshop CS4 (11.0.1). I am rock solid with Photoshop CS3 (10.0.1) on my system, by the way.
I am running a Mac Pro 2 x 2.26 GHz Quad-Core Intel Xeon with 8 GB of RAM with the ATI Radeon HD 4870 on OS X 10.5.8
Dual monitor set-up, Wacom tablet with latest driver.
Frequently and randomly Photoshop CS4 will hang or sometimes just poof, disappear. The crashes don’t appear to be associated with a particular activity in Photoshop.
I see that there is currently no way to attach files here, so here’s an external link to a few recent crash logs:
Link
Any insight would be much appreciated.

Answer 1

I've had similar crashes since 10.5.0 and CS3 that followed over to CS4-10.5.8 and then to 10.6.2 (I don't have anything going on right now to test Ps under 10.6.3, but I am using 10.6.3-CS4 now and hoping the problems have been fixed).
Mac Pros running CS3-CS4 10.5-10.6 with more than one monitor seem to be more prone to the crashes.
I run three monitors on two matching OEM Apple cards including an Apple 30" which also may be a problem that contributes to the crashers.
If you do a lot of keeping multiple Ps windows open and dragging layers across windows from the Layers Pallet (like I used to do a lot of), several people recommended NOT dragging layers to windows from the Layers Pallet (only drag layers from window to window) — this reduced my crashers under 10.5.8-CS4, but has not eliminated them...
If you are hitting my crashers, you will also see problems associated with merely moving Layers up-down in the Layers Pallet (I don't know how to work around that one when you need to move a layer).