Bill,
Have you checked the fan that cools the heat sink. I ran my QS with the side 
door open and discovered the heat sink cooling fan was bad. I ordered a new fan 
and while waiting for it ran the computer with a small electric fan directed at 
the heat sink cooling fins. New fan cost about $15.00.
FWIW


On Dec 25, 2012, at 8:15 PM, Bill Connelly <[email protected]> wrote:

> On Dec 16, 2012, at 12:00 PM, Bill Connelly wrote:
>> 
>> On Dec 15, 2012, at 10:21 PM, John Callahan wrote:
>>>> 
>>> Have you considered overheating? I had the same problems with my 
>>> QuickSilver (2000).
>>> Replaced the heat-sink cooling fan and reseated the heat-sink and the 
>>> problems were gone.
>>> That was over four years ago and it is still running OS X Leopard like a 
>>> champion.
>> 
>> Yes ... I'm looking for some Arctic Silver 5 to try your idea. Thx for the 
>> encouragement and optimism ...
>> 
> 
> Update: I tried switching mobo's (a previous one had an ethernet problem), 
> and got the same kp / random program crashing. I believe this eliminates the 
> mobo as the issue ... or at least decreases its likelihood.
> 
> Use of Arctic Silver Cleaning Solutions and Thermal Paste replacement, and at 
> the same time, a more thorough mobo cleaning, eventually led to the same 
> issues.
> (anyone know where I can get a couple of thermal pads I found on the dual 
> cpus? might be good to try replacing them at some point ... wishing I could 
> fix the L3 cache) ...
> 
> The L3 cache does not always appear in the System Profiler when I could get 
> the OS X 10.5.8 to Startup all the way. And Apple System Profiler > 
> Diagnostics shows the Power On Self Test  "Failed" if the L3 cache is not 
> detected under Hardware.
> 
> Other symptoms:  if I continue to run apps ... Mail  and Mactracker crash 
> randomly.
> 
> Here's a link to a similar discovery sequence: 
> http://archive.macfixitforums.com/ubbthreads.php/ubb/printthread/Board/11/main/93993/type/thread
> 
> Seems like a solution would be to try and replace the Dual 1GHz cpu daughter 
> card.
> 
> I'm also looking into upgrading my computer to a G5 ... and try to fix the QS 
> at a later date ...
> 
> Anyone know how to repair / replace an L3 cache on a QS 2002 Dual 1GHz cpu 
> card?
> 
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