Supermicro X10SLH-F motherboard kernel panics with 9.2 Release and 10.0 RC4

Hello Everyone,

I need help resolving kernel panics on a Supermicro X10SLH-F motherboard 
in a Supermicro SC-825 chassis.  I originally installed FreeBSD 9.2 
Release/amd64 but kept having kernel panics after varying amounts of 
uptime and while running the following command against some or all of 
the SATA hard drives in the system:

dd if=/dev/zero of=/dev/ada/n/ bs=100m &

A sample vmcore file is here:

http://codepad.org/FIjqh2Nt

While canvassing the FreeBSD Forums I followed a suggestion to try 10.0 
RC4/amd64.  The machine still panicked under the same conditions at 
around 27 hours uptime.  The vmcore file is here:

http://codepad.org/svtRfRT1

System memory has run Memtest for 62 hours and 47 passes without error 
and the chassis has dual 740W PSU's so I think I have memory and PSU 
possibilities eliminated.

Apologies if I've sent my plea to the wrong place.  Tell me where to go 
and I'll bother someone else.  Thanks, Dan.


-- 
The only person who always got his work done by Friday was Robinson Crusoe.