Netware 6.5 SP6 GroupWise 7.02

This server is our Primary TimeKeeper and a Groupwise Post office, not the Domain, gwia etc.
All has been fine for almost a year and now in a period of 1 week it has abended a few times.
Can anyone suggest a direction?
Please!


Novell Open Enterprise Server, NetWare 6.5 PVER: 6.50.06

Server UHHG_NW_FS7 halted Wednesday, July 23, 2008 10:40:01.708 pm
Abend 1 on P00: Server-5.70.06: Page Fault Processor Exception (Error code 00000000)

Registers:
CS = 0060 DS = 007B ES = 007B FS = 007B GS = 007B SS = 0068
EAX = 00000001 EBX = 65657246 ECX = 00000000 EDX = FD544200
ESI = 00000000 EDI = 00000000 EBP = 927CD3D8 ESP = 927CD3C4
EIP = 917DD6FA FLAGS = 00010202
917DD6FA 8B4324 MOV EAX, [EBX+24]=?
EIP in GWENN5.NLM at code start +000D46FAh
Access Location: 0x6565726A

The violation occurred while processing the following instruction:
917DD6FA 8B4324 MOV EAX, [EBX+24]
917DD6FD 8B5320 MOV EDX, [EBX+20]
917DD700 39C2 CMP EDX, EAX
917DD702 730C JNB 917DD710
917DD704 BE078E0000 MOV ESI, 00008E07
917DD709 E9A6010000 JMP 917DD8B4
917DD70E 89C0 MOV EAX, EAX
917DD710 8B7334 MOV ESI, [EBX+34]
917DD713 83FE0E CMP ESI, 0000000E
917DD716 7638 JBE 917DD750



Running process: GWTCP-pobo-Handler_11 Process
Thread Owned by NLM: GWPOA.NLM
Stack pointer: 927CD938
OS Stack limit: 927BE0A0
Scheduling priority: 67371008
Wait state: 3030070 Yielded CPU
Stack: --927CD4D0 ?
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--00E46F7C ?
--AE630A00 ?
--927CD528 ?
--927CD4E0 ?
91772F39 (GWENN5.NLM|GWENN5@TrackerReadNext+BA9)
--65657246 ?
--AE630A00 ?
--00008120 (LOADER.NLM|KernelAddressSpace+8120)
--00000001 (LOADER.NLM|KernelAddressSpace+1)
--927CD3FC ?
--8745F4D2 ?
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--00000000 (LOADER.NLM|KernelAddressSpace+0)
882586C0 (N100.LAN|(Code Start)+56C0)
--882683DC ?
--8745F4D2 ?
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--8826F010 ?
--2D892128 ?
--88268CB4 ?
8823B69C (MSM.NLM|CMSMValidateAuxDataBuffer+DC)
--882683DC ?
--2D892128 ?
--8826F010 ?
--88268CB4 ?
8823B9BB (MSM.NLM|CMSMValidateAuxDataBuffer+3FB)
--882683DC ?
8824D80E (ETHERTSM.NLM|EtherTSMRegisterHSM+11A)
830150D1 (LSL.NLM|LSLSendPacket+91)
830158E0 (LSL.NLM|CLSLSendPacket+E)
--00000297 (LOADER.NLM|KernelAddressSpace+297)
--88697900 ?
--88697900 ?
--00000003 (LOADER.NLM|KernelAddressSpace+3)
--886979B0 ?
8749B5BC (TCPIP.NLM|IPSendWithRoute+3DC)
-0043D410 (SERVER.NLM|xAllocSizeTable+54)
--891A5680 ?
--886979B0 ?
--00000014 (LOADER.NLM|KernelAddressSpace+14)
--884168A4 ?
--88697900 ?
--886979B0 ?
8749B303 (TCPIP.NLM|IPSendWithRoute+123)
--88697900 ?
--884168A4 ?
--88416738 ?
--88697900 ?
--884168A4 ?
-0043D3D4 (SERVER.NLM|xAllocSizeTable+18)
884349E2 (TCP.NLM|TCPAnyAddrCheck+52B6)
--88697900 ?
--884168A4 ?
--00000032 (LOADER.NLM|KernelAddressSpace+32)
--884168A4 ?
--88416804 ?
--927CD4E4 ?
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--927CD51C ?
--00008120 (LOADER.NLM|KernelAddressSpace+8120)
87014BB7 (THREADS.NLM|malloc+37)
--00008120 (LOADER.NLM|KernelAddressSpace+8120)
--8D1C5D00 ?
--927CD4D0 ?
--927CD520 ?
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--AE630A00 ?
--92D13900 ?
--93A1C860 ?
--927CD54C ?
919788D7 (GWENN5.NLM|GWENN5@STMBlobSetup+567)
--00E46F7C ?
--AE630A00 ?
--00008120 (LOADER.NLM|KernelAddressSpace+8120)
--927CD528 ?
917DD961 (GWENN5.NLM|GWENN5@BCEFSetHeader+361)
--00008120 (LOADER.NLM|KernelAddressSpace+8120)
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--00008120 (LOADER.NLM|KernelAddressSpace+8120)
83011557 (LSL.NLM|LSLPollProcedure+17)
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--00000031 (LOADER.NLM|KernelAddressSpace+31)
--00000032 (LOADER.NLM|KernelAddressSpace+32)
--00000001 (LOADER.NLM|KernelAddressSpace+1)
--AE630A00 ?
--AE630A00 ?
0020C0CC (SERVER.NLM|CallRegisteredPollingRoutines+44)
--0CF0096E ?
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--00000286 (LOADER.NLM|KernelAddressSpace+286)
--00000286 (LOADER.NLM|KernelAddressSpace+286)
0021C31D (SERVER.NLM|SchedThreadYield+325)
--927CD560 ?
--93A1C860 ?
--92D13900 ?
--927CD580 ?
91B9B553 (GWENN5.NLM|GWENN5@NgwStreamInto+B3)

Additional Information:
The CPU encountered a problem executing code in GWENN5.NLM. The problem may be in that module or in data passed to that module by a process owned by GWPOA.NLM.