We have a 4 node cluster in which the nodes have begun abending fairly frequently (2-3 times a month), with the following abend log:

Novell Netware, V6.5 Support Pack 5 - CPR Release
PVER: 6.50.05

Server CLUSTER-3 halted Tuesday, February 24, 2009 7:24:33.902 am
Abend 1 on P00: Server-5.70.05: Page Fault Processor Exception (Error code 00000000)

Registers:
CS = 0008 DS = 0010 ES = 0010 FS = 0010 GS = 0010 SS = 0010
EAX = 8F218C6C EBX = CCCCCC90 ECX = 00000000 EDX = 00072BA8
ESI = 8A391060 EDI = 024B5E46 EBP = 8FA83C84 ESP = 8FA83C70
EIP = 8AC9E9B2 FLAGS = 00210216
8AC9E9B2 3B4B04 CMP ECX, [EBX+04]=?
EIP in COMN.NSS at code start +000199B2h
Access Location: 0xCCCCCC94

The violation occurred while processing the following instruction:
8AC9E9B2 3B4B04 CMP ECX, [EBX+04]
8AC9E9B5 0F85C6000000 JNZ 8AC9EA81
8AC9E9BB 3B3B CMP EDI, [EBX]
8AC9E9BD 0F85BE000000 JNZ 8AC9EA81
8AC9E9C3 3B7358 CMP ESI, [EBX+58]
8AC9E9C6 0F85B5000000 JNZ 8AC9EA81
8AC9E9CC 8B35B8E9708A MOV ESI, [8A70E9B8]=000025CE
8AC9E9D2 46 INC ESI
8AC9E9D3 8A6328 MOV AH, [EBX+28]
8AC9E9D6 8935B8E9708A MOV [8A70E9B8]=000025CE, ESI



Running process: Server 00:45 Process
Thread Owned by NLM: SERVER.NLM
Stack pointer: 8FA84F60
OS Stack limit: 8FA7D020
Scheduling priority: 67371008
Wait state: 50500F0 Waiting for work
Stack: --8F218CA8 ?
--8FA84DC8 ?
--8FA84DC8 ?
--00000002 (LOADER.NLM|KernelAddressSpace+2)
--8A391060 ?
--8FA83CB0 ?
8AC9EE82 (COMN.NSS|COMN_LookupByZidWhileWildcarding+22)
--8FA84DC8 ?
--8A391060 ?
--024B5E46 ?
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--00000002 (LOADER.NLM|KernelAddressSpace+2)
--8FA84DC8 ?
--2D2C8960 ?
--8FA84DC8 ?
--8FA84C20 ?
--8FA83F14 ?
8ACE291D (COMN.NSS|WILD_searchForFile+5ED)
--8FA84DC8 ?
--8A391060 ?
--024B5E46 ?
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--00000002 (LOADER.NLM|KernelAddressSpace+2)
--024B5E46 ?
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--00000017 (LOADER.NLM|KernelAddressSpace+17)
--00090000 ?
--00820082 ?
-00560045 ?
-00520050 (SERVER.NLM|ESMMemoryTracker+2330)
002E004F (SERVER.NLM|LoggerThread+1AA3)
-00490047 ?
--00000044 (LOADER.NLM|KernelAddressSpace+44)
--8913D144 ?
90A00010 (CONNAUD.NLM|ConnectionGrantedEventProc+1FBD)
88E71D4E (LSL.NLM|LSLServiceEvents+6E)
--8913D144 ?
A1E33DEA (MSM.NLM|CMSMServiceEvents+A)
--00000086 (LOADER.NLM|KernelAddressSpace+86)
--00000001 (LOADER.NLM|KernelAddressSpace+1)
--9093B6C0 ?
--1B92371C ?
--8FA83D38 ?
9097CF06 (BASP.LAN|(Code Start)+2F06)
--00000001 (LOADER.NLM|KernelAddressSpace+1)
--00000001 (LOADER.NLM|KernelAddressSpace+1)
--A6B7AC40 ?
--8FA83D38 ?
8ACA0A2C (COMN.NSS|COMN_ReleaseInternal+C)
--A6B7AC40 ?
--A6B7AC40 ?
--8FA83D48 ?
8ACA0A2C (COMN.NSS|COMN_ReleaseInternal+C)
--A6B7AC40 ?
--8FA83DE0 ?
8AC9066D (COMN.NSS|ZAS_GetEffectiveACL+CD)
--A6B7AC40 ?
--00000086 (LOADER.NLM|KernelAddressSpace+86)
--00000001 (LOADER.NLM|KernelAddressSpace+1)
--00000001 (LOADER.NLM|KernelAddressSpace+1)
--90A113DC (ETHERTSM.NLM|CEtherTSMGetConfigInfo+9F2F)
--8FA83DC6 ?
90AE3B3E (B57.LAN|(Code Start)+1B3E)
--909375FC ?
--1B923908 ?
--88FC78A4 ?
--88FC78A4 ?
--00000000 (LOADER.NLM|KernelAddressSpace+0)
9097A15F (BASP.LAN|(Code Start)+15F)
--88FC78A4 ?
--3258D1A8 ?
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--1B92371C ?
--0000003C (LOADER.NLM|KernelAddressSpace+3C)
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--0000000A (LOADER.NLM|KernelAddressSpace+A)
--0000003C (LOADER.NLM|KernelAddressSpace+3C)
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--0000000A (LOADER.NLM|KernelAddressSpace+A)
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--8FA83D54 ?
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--ABCD4780 ?
--8FA83EB0 ?
--8FA84DC8 ?
--0000000D (LOADER.NLM|KernelAddressSpace+D)
--8FA83E14 ?
--8FA83EC0 ?
--8FA84DC8 ?
--0000000D (LOADER.NLM|KernelAddressSpace+D)
--8FA83E24 ?
8AC90ECE (COMN.NSS|ZAS_GetEffectiveRightsByIDs+2E)
--8FA84DC8 ?
--A6B7AC40 ?
--00000091 (LOADER.NLM|KernelAddressSpace+91)
--00000000 (LOADER.NLM|KernelAddressSpace+0)
--8FA83E04 ?
--00000000 (LOADER.NLM|KernelAddressSpace+0)

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