After much milling about, I believe the problem now to be entirely related
to my use of the CYRIX 6x86MX-PR233.
This seems to be an issue ONLY with newer Cyrix PR-233 CPUs, as my older
686L-PR200 and PR150 did not have this problem, and/or the Red hat patches
addressed it.
Not surprisingly, I have received no answer from Cyrix, or RedHat after
initially reporting this, but I found a solution:
My system now hums away with a nice AMD K6-233, and has *NO* problems.
Granted, I am limited by a bus speed of 66MHz (down from my prior 75MHz
with the Cyrix chip. Yes, I know, these can be overclocked, but I tend to
value stability more in a web-server...call me crazy.)
So, if you continue having problem, getting an AMD K6 is the solution.
Harry