We have been getting multiple abends on one particular server - can anyone throw some light on this?

Here is the head of the abend log & the rest is in the attachment.


Novell Open Enterprise Server, NetWare 6.5
PVER: 6.50.08

Server REDSFSP2N1 halted Friday, 19 June 2009 12:00:13.437 am
Abend 1 on P00: Server-5.70.08: General Protection Processor Exception (Error code 00000000)

Registers:
CS = 0008 DS = 0010 ES = 0010 FS = 0010 GS = 0023 SS = 0010
EAX = 41000006 EBX = 93F65BA0 ECX = 3C819400 EDX = 93F5B620
ESI = 9645BF80 EDI = 9645BAD4 EBP = 92690A75 ESP = 9645BA98
EIP = A2AEB14A FLAGS = 00010286
A2AEB14A 2E004800 ADD CS:[EAX+00]=?, CL
EIP in UNKNOWN memory area

The violation occurred while processing the following instruction:
A2AEB14A 2E004800 ADD CS:[EAX+00], CL
A2AEB14E 4C DEC ESP
A2AEB14F 00540048 ADD [EAX+EAX+48], DL
A2AEB153 002E ADD [ESI], CH
A2AEB155 005000 ADD [EAX+00], DL
A2AEB158 45 INC EBP
A2AEB159 005200 ADD [EDX+00], DL
A2AEB15C 54 PUSH ESP
A2AEB15D 004800 ADD [EAX+00], CL
A2AEB160 2E004300 ADD CS:[EBX+00], AL

************************************************** *******
Novell Open Enterprise Server, NetWare 6.5
PVER: 6.50.08

Server REDSFSP2N1 halted Sunday, 21 June 2009 2:56:51.991 am
Abend 1 on P00: Server-5.70.08: Stack Fault Processor Exception (Error code 00000000)

Registers:
CS = 0008 DS = 0010 ES = 0010 FS = 0010 GS = 0023 SS = 0010
EAX = 00000000 EBX = 00000000 ECX = 9D962F2C EDX = E393D0F1
ESI = 93ECB380 EDI = 00000000 EBP = 9D962EDC ESP = 9D962C14
EIP = 8C3BAAA0 FLAGS = 00010282
8C3BAAA0 E81B86B0FF CALL NSS.NLM|NSSMPK_LockNss
EIP in NWSA.NSS at code start +00028AA0h

The violation occurred while processing the following instruction:
8C3BAAA0 E81B86B0FF CALL NSS.NLM|NSSMPK_LockNss
8C3BAAA5 9C PUSHFD
8C3BAAA6 58 POP EAX
8C3BAAA7 2500020000 AND EAX, 00000200
8C3BAAAC 85C0 TEST EAX, EAX
8C3BAAAE 0F84AF000000 JZ 8C3BAB63
8C3BAAB4 89D8 MOV EAX, EBX
8C3BAAB6 31D2 XOR EDX, EDX
8C3BAAB8 31C9 XOR ECX, ECX
8C3BAABA BB20000000 MOV EBX, 00000020

Thanks