Hello Everyone,
I've problem with one server, it is gateway for groupwise. It hangs several times per month with the same abend.log.
Could you help me with it?
Many thanks.

************************************************** *******
Novell Open Enterprise Server, NetWare 6.5
PVER: 6.50.07

Server GW_GATEWAY halted Wednesday, April 1, 2009 7:51:53.786 pm
Abend 1 on P00: Server-5.70.07-0: Alloc detected a corrupt free block
Pointer: 0x8AB555E0
Corruption start: 0x8AB55660
Allocation size: 0x25C, 604
Alloc pool: WSPIP.NLM


Registers:
CS = 0008 DS = 0023 ES = 0023 FS = 0023 GS = 0023 SS = 0010
EAX = A170F184 EBX = FC35FB20 ECX = A170F223 EDX = A170F222
ESI = 89D27720 EDI = 0000025C EBP = 89D277FC ESP = A170F180
EIP = 0031B45A FLAGS = 00000096
0031B45A 83C404 ADD ESP, 00000004
EIP in SERVER.NLM at code start +001147DAh

The violation occurred while processing the following instruction:
0031B45A 83C404 ADD ESP, 00000004
0031B45D FF842494010000 INC dword ptr [ESP+00000194]
0031B464 EBA5 JMP 0031B40B
0031B466 8B7B34 MOV EDI, [EBX+34]
0031B469 8B9424CC010000 MOV EDX, [ESP+000001CC]
0031B470 8B0F MOV ECX, [EDI]
0031B472 89D8 MOV EAX, EBX
0031B474 894B34 MOV [EBX+34], ECX
0031B477 85C9 TEST ECX, ECX
0031B479 7506 JNZ 0031B481



Running process: Server 00:43 Process
Thread Owned by NLM: SERVER.NLM
Stack pointer: A170FF40
OS Stack limit: A1708000
Scheduling priority: 67371008
Wait state: 50500F0 Waiting for work
Stack: --A170F184 ?
--6F6C6C41 ?
--65642063 ?
--74636574 ?
--61206465 ?
--726F6320 ?
--74707572 ?
--65726620 ?
--6C622065 ?
--0A6B636F ?
--6F502020 ?
--65746E69 ?
--20203A72 ?
--20202020 ?
--20202020 ?
--41387830 ?
--35353542 ?
--200A3045 ?
--726F4320 ?
--74707572 ?
--206E6F69 ?
--72617473 ?
--30203A74 ?
--42413878 ?
--36363535 ?
--20200A30 ?
--6F6C6C41 ?
--69746163 ?
--73206E6F ?
--3A657A69 ?
--78302020 ?
--2C433532 ?
--34303620 ?
--4120200A ?
--636F6C6C ?
--6F6F7020 ?
--20203A6C ?
--20202020 ?
--50535720 ?
--4E2E5049 ?
--000A4D4C ?
--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)
--8AB55838 ?
--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)
--8854D380 ?
--8854D380 ?
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--A170F434 ?
--8854D380 ?
--87FC1384 ?
--A170F2BC ?
--A170F29C ?
--A170F29C ?
86382EB1 (COMN.NSS|COMN_GetInfoByBeastPtr+A1)
--87FC1020 ?
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--8854D380 ?
--8854D380 ?
--A170F434 ?
--1FBF1C00 ?
--A170F334 ?
--A170F434 ?
-0043FD08 (SERVER.NLM|xAllocSizeTable+0)
--A170F334 ?
--A170F304 ?
863C2B2E (COMN.NSS|MSG_GetInfo+10E)
--A170F334 ?
--9F0909E0 ?
--A170F434 ?
--000003D1 (LOADER.NLM|KernelAddressSpace+3D1)
--A170F434 ?
-0043FDE0 (SERVER.NLM|xAllocSizeTable+D8)
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--000003D1 (LOADER.NLM|KernelAddressSpace+3D1)
--000000C8 (LOADER.NLM|KernelAddressSpace+C8)
--A170F5C4 ?
--8AB555E0 ?
--00000000 (LOADER.NLM|KernelAddressSpace+0)
863C07E0 (COMN.NSS|FH_DenyWriteMandatory+280)
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--9F0909F8 ?
--1FBF1C00 ?
--00000010 (LOADER.NLM|KernelAddressSpace+10)
--A170F334 ?
--9F0909E0 ?
8605B694 (NSS.NLM|MSG_Call+B4)
--A170F334 ?

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.

Loaded Modules:
WPSD.NLM ServiceDescriptor Natives NLM
Version 2.00 August 8, 2005
Code Address: 97DC3000h Length: 00000350h
Data Address: 97DC5000h Length: 000000A4h
N_PRDDAT.NLM N_PRDDAT
Version 1.00 February 3, 2003
Code Address: 97DBE000h Length: 00001E84h
Data Address: 97DC1000h Length: 000001D0h
GWDVA.NLM GroupWise Document Viewer Agent (release version)
Version 7.00.03 June 9, 2008
Code Address: 97BCD000h Length: 00065F1Ah
Data Address: 96CF2000h Length: 0004B44Bh
EVENTMGR.NLM Novell XTier Event Manager
Version 3.01.04 June 19, 2006
Code Address: 9427A000h Length: 000012A8h
Data Address: 90198000h Length: 00000350h
NSCM.NLM Novell XTier Security Context Manager
Version 3.01.04 June 19, 2006
Code Address: 9454F000h Length: 0000418Ah
Data Address: 90196000h Length: 0000061Ch
WSPIP.NLM NetWare Winsock Service 1.0 NLM for TCP and UDP
Version 6.23.06 September 18, 2007
Code Address: 8A9BE000h Length: 00010224h
Data Address: 89D43000h Length: 0000283Ch
NCPIP.NLM NetWare NCP Services over IP
Version 6.02 October 6, 2006
Code Address: 8A95B000h Length: 000168E9h
Data Address: 89D2B000h Length: 00003540h
POLIMGR.NLM NetWare License Policy Manager
Version 6.27 November 3, 2005
Code Address: 8A929000h Length: 00013F5Ch
Data Address: 8A93E000h Length: 00008E90h
XNTPD.NLM NTPv3 Time Synchronization Service
Version 1.03.04 May 29, 2007
Code Address: 8A899000h Length: 0002BB07h
Data Address: 8A8C6000h Length: 0002451Fh
NETDB.NLM Network Database Access Module
Version 4.11.05 January 6, 2005
Code Address: 8A85D000h Length: 0001394Dh
Data Address: 89D1F000h Length: 000025FCh
BSDSOCK.NLM Novell BSDSOCK Module
Version 6.81.04 October 25, 2007
Code Address: 8A28A000h Length: 00011BF9h
Data Address: 8A29D000h Length: 0000C0E0h
TCPIP.NLM Novell TCP/IP Stack - Network module (NULL encryption)
Version 6.81.10 October 25, 2007
Code Address: 89CCF000h Length: 0004E7DCh
Data Address: 89F87000h Length: 00038D30h
TCP.NLM Novell TCP/IP Stack - Transport module (NULL encryption)
Version 6.81.05 October 25, 2007
Code Address: 89E94000h Length: 000252B2h
Data Address: 89EBB000h Length: 0007EEE0h
NETLIB.NLM Novell TCPIP NETLIB Module
Version 6.50.22 February 12, 2003
Code Address: 89DA5000h Length: 00005AACh
Data Address: 89DAC000h Length: 000D0710h