memory corruption

From time to time I am having a system reboot. It has been traced to memory corruption problem with cfp.exe

COMODO Product Version: 3.5.55810.432
cfp.exe file version: 3.5.55470.430

Windows XP Kernel Version 2600 (Service Pack 3) UP Free x86 compatible
Product: WinNt, suite: TerminalServer SingleUserTS Personal
Kernel base = 0x804d7000 PsLoadedModuleList = 0x8055b1c0
Debug session time: Wed Nov 19 20:45:41.793 2008 (GMT-5)
System Uptime: 0 days 5:49:44.376

Probably caused by : memory_corruption ( nt!MiDeferredUnlockPages+13d )
Followup: MachineOwner

PFN_LIST_CORRUPT (4e)
Typically caused by drivers passing bad memory descriptor lists (ie: calling
MmUnlockPages twice with the same list, etc). If a kernel debugger is
available get the stack trace.
Arguments:
Arg1: 00000007, A driver has unlocked a page more times than it locked it
Arg2: 0003bc12, page frame number
Arg3: 00000001, current share count
Arg4: 00000000, 0

Debugging Details:

BUGCHECK_STR: 0x4E_7

CUSTOMER_CRASH_COUNT: 1

DEFAULT_BUCKET_ID: DRIVER_FAULT

PROCESS_NAME: cfp.exe

IRP_ADDRESS: 8638d628

LAST_CONTROL_TRANSFER: from 80524bfd to 80533806

STACK_TEXT:
b86d7b48 80524bfd 0000004e 00000007 0003bc12 nt!KeBugCheckEx+0x13
b86d7b68 804ec23d 862e9000 864b0028 805627c0 nt!MiDecrementReferenceCount+0x4e
b86d7b9c 8054a036 873fc690 864b0028 805627c0 nt!MiDeferredUnlockPages+0x13d
b86d7bc8 8054b90b 862e9000 864b0028 862e94f4 nt!MiFreePoolPages+0xac
b86d7c08 804eca4f 862e9000 00000000 8638d668 nt!ExFreePoolWithTag+0x1b7
b86d7c5c 804ecaaa 8638d668 b86d7ca8 b86d7c9c nt!IopCompleteRequest+0xf4
b86d7cac 804ecae9 00000000 00000000 00000000 nt!KiDeliverApc+0xb3
b86d7cc4 804dc143 00000000 00000000 00000000 nt!KiSwapThread+0x64
b86d7cec 80566210 00000001 00000006 b86d7d01 nt!KeWaitForSingleObject+0x1c2
b86d7d50 804de7ec 000001e8 00000000 00000000 nt!NtWaitForSingleObject+0x9a
b86d7d50 7c90e4f4 000001e8 00000000 00000000 nt!KiFastCallEntry+0xf8
WARNING: Frame IP not in any known module. Following frames may be wrong.
02d3fee0 00000000 00000000 00000000 00000000 0x7c90e4f4

STACK_COMMAND: kb

FOLLOWUP_IP:
nt!MiDeferredUnlockPages+13d
804ec23d ?? ???

SYMBOL_STACK_INDEX: 2

SYMBOL_NAME: nt!MiDeferredUnlockPages+13d

FOLLOWUP_NAME: MachineOwner
MODULE_NAME: nt

DEBUG_FLR_IMAGE_TIMESTAMP: 48a404ab

IMAGE_NAME: memory_corruption

FAILURE_BUCKET_ID: 0x4E_7_nt!MiDeferredUnlockPages+13d

BUCKET_ID: 0x4E_7_nt!MiDeferredUnlockPages+13d

Followup: MachineOwner

Hi DavidR,

Did you do the internal update from CFP 3.0x to the latest CIS version? Can you also please let us know what Security Software you have installed.

Josh