V240 not booting after latest 9_recommended patchset

All,

I have a  V240 running 5.9 it was at patchset 122300-52 and I applied  the
latest 64 bit 9_Recommended patchset (122300-61).  My process was to detach
one side of the mirrored drives and apply the patch. Reboot the host and when
all is well, resync the mirrors.

All of the patches that needed to apply did, meaning I didn't see any abnormal
errors on the console or the log. However, when I reboot the host I get the
following error:
###
{1} ok boot
Probing system devices
<..snip..>
Rebooting with command: boot
Boot device: disk0:a  File and args:
SunOS Release 5.9 Version Generic_122300-61 64-bit
Copyright 1983-2003 Sun Microsystems, Inc.  All rights reserved.
Use is subject to license terms.
ERROR: Last Trap: Fast Data Access MMU Miss

{1} ok
###

I get the same message (Fast Data Access) booting from disk1.  So far I have:

1)      Setenv auto-boot? False ; reset-all

2)      Complete power off and restart (POST tests all PASSED)

3)      Reinstalled the boot-block on both disks.

4)      Can boot from cdrom (which I think rules out hardware).

I applied this same patchset to an exact twin (Hardware and Software) last
month without issue. I don't know where to go from here, any help is greatly
appreciated.

Sorry for the long post and thanks,
--
Bob
FIRST TENNESSEE

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