NW657 with GW702 Server experiencing random abends and reboots

Server seems to abend and reboot without warning
This last abend 3 wasn't preceded by any other abends
(Well they weren't logged anyway)
The server abended and immediately reset
Anyone have any ideas ?
Abend log below
On this occasion a major file copying routine was scheduled to kick in at 11 pm which seems to have triggered the problem.
Thanks
Splash

Novell Open Enterprise Server, NetWare 6.5
PVER: 6.50.07

Server SERVER halted Wednesday, 4 June 2008 11:00:22.462 pm
Abend 3 on P01: Server-5.70.07-1937: CPU Hog Detected by Timer

Registers:
CS = 0008 DS = 0023 ES = 0023 FS = 0023 GS = 0023 SS = 0010
EAX = FBF17BA3 EBX = 87DAD5E0 ECX = 87DEC018 EDX = 00000000
ESI = 87E47748 EDI = 0003C128 EBP = 9D713E4C ESP = 9D713E38
EIP = 00000000 FLAGS = 00000046

Running process: Interrupt service routine (nested count 0)
Interrupted process: Server 01:63 Process
Thread Owned by NLM: SERVER.NLM
Stack pointer: 9D714F80
OS Stack limit: 9D70D040
CPU 1 (Thread 7551F040) is in a NO SLEEP state
Scheduling priority: 67371008
Wait state: 5050130 Suspended by Abend Recovery
Stack: --FBF17BA3 ?
87ABE17B (LIBNSS.NLM|nssSpinLock+B)
87D9D122 (NSS.NLM|NSSMPK_LockNss+62)
-87DEC018 (NSS.NLM|NSSMPK_spinlock+0)
87DAD5E0 (NSS.NLM|fireAlarm+0)
--9D713E68 ?
87DAD5EE (NSS.NLM|fireAlarm+E)
--8E781178 ?
8E4A5E9B (TCP.NLM|TCPAnyAddrCheck+4753)
--0003C128 (LOADER.NLM|NestedInterruptCount+28)
-87E47748 (NSS.NLM|AlarmWorkToDo+0)
87DAD5E0 (NSS.NLM|fireAlarm+0)
-87E47748 (NSS.NLM|AlarmWorkToDo+0)
0036BF58 (SERVER.NLM|kDoFastWorkToDo+28)
-87E47748 (NSS.NLM|AlarmWorkToDo+0)
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--00000001 (LOADER.NLM|KernelAddressSpace+1)
--0003C128 (LOADER.NLM|NestedInterruptCount+28)
-87E47748 (NSS.NLM|AlarmWorkToDo+0)
--00000000 (LOADER.NLM|KernelAddressSpace+0)
-87E47748 (NSS.NLM|AlarmWorkToDo+0)
0022F3DC (SERVER.NLM|kWorkToDoCheckAllRunFast+A4)
-87E47748 (NSS.NLM|AlarmWorkToDo+0)
--00010001 ?
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--00000001 (LOADER.NLM|KernelAddressSpace+1)
--94D33760 ?
0022FB58 (SERVER.NLM|MpkSystemWork+68)
--00010001 ?
--00000000 (LOADER.NLM|KernelAddressSpace+0)
00223602 (SERVER.NLM|SchedSwitch+31E)
--9D713F94 ?
--94D33788 ?
--000005EA (LOADER.NLM|KernelAddressSpace+5EA)
--94D33760 ?
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--27E25000 ?
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--00000092 (LOADER.NLM|KernelAddressSpace+92)
--FBF17BA3 ?
-87DEC018 (NSS.NLM|NSSMPK_spinlock+0)
--0000003F (LOADER.NLM|KernelAddressSpace+3F)
--94D33760 ?
--9D713F80 ?
--9D713F94 ?
--000005EA (LOADER.NLM|KernelAddressSpace+5EA)
--94D33788 ?
--00000023 (LOADER.NLM|KernelAddressSpace+23)
--00000008 (LOADER.NLM|KernelAddressSpace+8)
--9D710010 ?
--00000023 (LOADER.NLM|KernelAddressSpace+23)
00120023 (LOADER.NLM|EthernetDriverReset+7B)
--00000023 (LOADER.NLM|KernelAddressSpace+23)
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--00000104 (LOADER.NLM|KernelAddressSpace+104)
--FBF17BA3 ?
--000000D0 (LOADER.NLM|KernelAddressSpace+D0)
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--79A552CD ?
--000005EA (LOADER.NLM|KernelAddressSpace+5EA)
001109E5 (LOADER.NLM|LocalAbend+21)
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--FBF17BA3 ?
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--00000008 (LOADER.NLM|KernelAddressSpace+8)
--00000046 (LOADER.NLM|KernelAddressSpace+46)
--9D713F94 ?
--FBF17BA3 ?
0036C0AA (SERVER.NLM|SuspendProcess+0)
--00000008 (LOADER.NLM|KernelAddressSpace+8)
--00010046 ?
--FBF17BA3 ?
87ABE179 (LIBNSS.NLM|nssSpinLock+9)
87D9D122 (NSS.NLM|NSSMPK_LockNss+62)
-87DEC018 (NSS.NLM|NSSMPK_spinlock+0)
--94D33760 ?
--9D714F20 ?
87B5FEF7 (NWSA.NSS|NSSCase89+17)
-8CAD1D54 (DS.NLM|DotDelims+0)
--00000003 (LOADER.NLM|KernelAddressSpace+3)
--9D090017 ?
--FE08000E ?
--000C0001 ?
--8C000021 ?
--0000000A (LOADER.NLM|KernelAddressSpace+A)
--9D713FC0 ?
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--320A0800 ?
--00000000 (LOADER.NLM|KernelAddressSpace+0)

Additional Information:
The NetWare OS detected a problem with the system while executing a process owned by SERVER.NLM. It may be the source of the problem or there may have been a memory corruption.