Seeking the source of kernel panics

[Ian Sights]

I've got a sawtooth G4 with 10.2.3 and I've been having some apps quit 
from time to time. Now I've been getting kernel panics fairly 
regularly. I'm not sure what to do next.

I switched to a different install of Jaguar on a different drive ( a 
clean install) and still got kernel panics, so I don't think it's my OS 
or installed apps.
I pulled the memory cards one by one to see if there was a bad chip and 
the machine would crash about every 10 minutes anyway. So it's probably 
not a bad chip, unless I have two bad DIMMS. I can't run DIMM first aid 
because if I boot into 9.x, the machine will freeze shortly after 
getting to the desktop. (less than a minute)  This even if I boot from 
the OS 9 install CD. Ouch. I did run DIMM first aid when I first got OS 
X back in November, for what that's worth.
I'll get panics when I'm opening a document from an application, or 
mousing in the Finder. I can't see a real pattern. I do have a wacom 
tablet and mouse installed, but I got a kernel panic once when I wasn't 
even at the machine, but a few feet away on my 7600.
I did install a Pioneer (Cendyne) DVR-105 drive last month, but since 
it's the same as the superdrive, I wouldn't think that was too out of 
the ordinary.

I had noticed that Photoshop or Illustrator would quit when the 
monitors went to sleep (no dialog box, they just quit) , so I've been 
suspecting my old iX3d display card I've been using to run my second 
monitor for a while. I was surprised that it even worked with Jaguar at 
all.
I've pulled the card and ordered the ATI Raedon 7000 PCI as a tradeup. 
(see their site for details on the trade in)
But I've continued to have kernel panics even with the stock display 
card. True, much less often, (twice in 14 hours) but that's still too 
often for me.

Now at least I can get some work done, but I'm open to suggestions of 
things to check or do.

Ian Sights