Wildfire Crash

Hi ,
        One of our partitions of our wildfire machine crashed.
I 'm running ccat on the machine. and it produced the following message.
Anybody knows what it means.

----------  - tb_shoot ack timeout Tru64 Unix V5.1A Node: guinea.gsf.de 
----------

Full Description:


---- Number of Rules Matching this Case ----
Rule Match Count: 1

----Source Rule Info. ----
Matching Source Rule Set: Tru64_Unix_RULES_Generic:8/18/2003
Matching Source Text Set: Tru64_Unix_Include_Text01_Generic:8/18/2003

---- Rule Match Results ----

Status: Identified
Rule ID: 009D11DD-DC54427C-31015A
Rule Title: dUNIX panic  tb_shoot ack timeout  troubleshooting
Specificity: 1

Qtip Link: http://qtip3.alf.cpqcorp.net/ccat/009D11DD-DC54427C-31015A.html



Evidence:
         Tru64_Unix_Main Tru64_Unix_Generic Tru64_Unix_V5.1A

PHYSICAL_MEMORY: 335871
STACK_TRACE: stop_secondary_cpu panic event_timeout printf panic 
pmap_update_send pmap_tbsync pmap_enter u_vp_fault u_map_fault vm_fault 
trap _XentMM
CRASH_TIME: 02/23/2006 09:52:34
PANIC_STRING: tb_shoot ack timeout
AVAILABLE_CPUS: 23
ARCHITECTURE: axp
UPTIME: 143.12 hours
HOSTNAME: guinea.gsf.de
CRASH_ANALYSIS: gui
KMF_FAULTING_PC: 0x0
PANIC_CPU: 21
FAULT_VIRT_ADDRESS: 0000000000000000
OS_VERSION: V5.1A
SYSTEM_STRING: GS320-6/731
NUMBER_OF_CPUS: 24
OPERATING_SYSTEM: Tru64 Unix

************ End of Message ************

Thanks
yogesh