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System Crashing .... plz help asap


tmp007
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Never got a new dump. Honestly it looks a lot like Symantec may be the culprit from further analysis with Mr Snrub and myself, but without pool tagging it's going to be hard to say for certain. It's definitely an IRP leak, which seem to mostly track back to USB devices or FILE objects which are being held up by symevent.sys (hence only POSSIBLY Symantec - could be a bad driver too).

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Hello Cluberti and Mr Snrub,

I am bit away from that machine at the moment, I'm pretty sure it have core'd till now.

I will upload it as soon as I get control over. Wont be much long :-)

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In the meantime, is pool tagging worth enabling on a XP x64 machine at home that never bsods?

Or just for company servers.

Hmm... if it never bsods it wouldn't need it. :)

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Hello Cluberti and Mr Snrub,

Lets get back to the business :-)

1: kd> !poolused 7

Sorting by NonPaged Pool Consumed

Pool Used:

NonPaged Paged

Tag Allocs Frees Diff Used Allocs Frees Diff Used

Irp 1234650 923602 311048 193442080 0 0 0 0 Io, IRP packets

NDCM 4878844 4877733 1111 11535984 0 0 0 0 UNKNOWN pooltag 'NDCM', please update pooltag.txt

SpDN 117439 117420 19 9408720 602 602 0 0 UNKNOWN pooltag 'SpDN', please update pooltag.txt

Ar5k 295798 251837 43961 7129360 0 0 0 0 UNKNOWN pooltag 'Ar5k', please update pooltag.txt

MmCm 770 23 747 3625232 0 0 0 0 Calls made to MmAllocateContiguousMemory , Binary: nt!mm

tdLL 11832 9916 1916 1260968 0 0 0 0 UNKNOWN pooltag 'tdLL', please update pooltag.txt

Attv 1418997 1418635 362 744608 0 0 0 0 UNKNOWN pooltag 'Attv', please update pooltag.txt

Ddk 22 0 22 720968 84 78 6 336 Default for driver allocated memory (user's of ntddk.h)

Wdm 2955 2116 839 698352 298 287 11 1392 WDM

INTC 110935 110902 33 541608 347223 346967 256 10804344 Intel video driver

Thre 1260008 1259207 801 506232 0 0 0 0 Thread objects , Binary: nt!ps

File 7652723 7649529 3194 488176 0 0 0 0 File objects

Devi 966 446 520 365640 0 0 0 0 Device objects

AmlH 4 0 4 262144 0 0 0 0 ACPI AMLI Pooltags

Even 2354587 2349626 4961 242512 0 0 0 0 Event objects

SACM 54717 52659 2058 224912 0 0 0 0 UNKNOWN pooltag 'SACM', please update pooltag.txt

Mm 13 0 13 222432 641 637 4 2632 general Mm Allocations , Binary: nt!mm

CMpa 37521 33669 3852 215712 0 0 0 0 registry post apcs , Binary: nt!cm

Vad 681176 676726 4450 213600 0 0 0 0 Mm virtual address descriptors , Binary: nt!mm

NDpp 87 15 72 197840 0 0 0 0 packet pool , Binary: ndis.sys

Ntf0 3 0 3 196608 327432 326175 1257 95320 general pool allocation , Binary: ntfs.sys

usbp 4877 4827 50 193672 137 128 9 424 UNKNOWN pooltag 'usbp', please update pooltag.txt

Ntfr 28341 26017 2324 149192 0 0 0 0 ERESOURCE , Binary: ntfs.sys

AfdC 11124 10254 870 139200 0 0 0 0 Afd connection structure , Binary: afd.sys

Pool 4 1 3 135168 0 0 0 0 Pool tables, etc.

...

TOTAL 129490997 129081351 409646 236314128 226032011 225955018 76993 126236672

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Did you test uninstalling Symantec AV?

The dump still has it loaded, with those modules from 2006 present...

The pool tagging just confirms what we suspected - the nonpaged pool is exhausted through allocations to "Irp ", which is from I/O request packets.

The I/Os themselves are completed, but the pool allocations not freed, most likley due to some driver.

The I/Os also seem to be aimed at the various USB root hubs, which is why I also asked about any USB devices that may have been connected to the system recently.

If I was a betting man, I would say it's Symantec AV causing the problem from the information we have so far - I would start by uninstalling that and watching the system for ~20 hours (the dumps so far seem to take 16-19 hours to get the point where they crash).

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Hello Mr Snrub,

Did you test uninstalling Symantec AV?

>> No I haven't tested that yet as I wanted to get to the root cause before attempt for any workaround..

Yes, I agree that the nonpaged pool is exhausted through allocations to "Irp "

Can you throw some light what exactly poinits to Symantec AV ?

The I/Os themselves are completed, but the pool allocations not freed, most likley due to some driver.

>> can we determine exactly which drivers?

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Did you test uninstalling Symantec AV?

>> No I haven't tested that yet as I wanted to get to the root cause before attempt for any workaround..

For easily reproducible issues it can be quicker to do simple "one at a time" tests, so considered part of root cause analysis (even if it rules the component out by the problem still being present without its presence).
Yes, I agree that the nonpaged pool is exhausted through allocations to "Irp "

Can you throw some light what exactly poinits to Symantec AV ?

Experience :)
The I/Os themselves are completed, but the pool allocations not freed, most likley due to some driver.

>> can we determine exactly which drivers?

Smarter people than me might be able to, but due to the way device and filter drivers work it's more of a "go with your gut" from me ;)
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So, you want root cause, eh? Don't trust us? Well, I don't trust me either ;) (although we were right). See here:

// IRP list, showing the major IRP locations - in this case, Ntfs, Npfs, and Tcpip:
Driver IRP[0] IRP[1] Maj/Min Function Count Name of Driver

8a683030 88670da8 ( e, 0) IRP_MJ_DEVICE_CONTROL 1 \Driver\NDProxy
8a7633f8 89cc57a0 ( e, 0) IRP_MJ_DEVICE_CONTROL 1 \Driver\Compbatt
8a6c5f38 8a683198 ( e, 0) IRP_MJ_DEVICE_CONTROL 1 \Driver\MountMgr
8a76a608 8a7345a0 8a733598 ( e, 0) IRP_MJ_DEVICE_CONTROL 5 \Driver\ACPI
8a76a608 8a731a80 (16, 0) IRP_MJ_POWER 1 \Driver\ACPI
8a6e5030 886f7700 886fc6e0 ( e, 0) IRP_MJ_DEVICE_CONTROL 5 \FileSystem\sr
89d69b78 87e7ad98 88127b20 ( c, 2) IRP_MJ_DIRECTORY_CONTROL 144 \FileSystem\Ntfs
89d69b78 8a6a6008 ( d, 0) IRP_MJ_FILE_SYSTEM_CONTROL 1 \FileSystem\Ntfs
89d69b78 ffbcb008 ( 0, 0) IRP_MJ_CREATE 1 \FileSystem\Ntfs
8a6e0f38 89cb9c88 ( e, 0) IRP_MJ_DEVICE_CONTROL 1 \Driver\CmBatt
8a67e438 89cb8c50 ( 0, 0) IRP_MJ_CREATE 1 \Driver\Cdrom
8a6df898 f7ce8b28 ( e, 0) IRP_MJ_DEVICE_CONTROL 1 \Driver\IBMPMDRV
8a6c6860 89d68450 ( e, 0) IRP_MJ_DEVICE_CONTROL 1 \Driver\Ftdisk
89d1b3b0 896b8ec8 ( e, 0) IRP_MJ_DEVICE_CONTROL 1 \Driver\NdisTapi
8a689870 84b003c8 f7f574f0 ( e, 0) IRP_MJ_DEVICE_CONTROL 3 \Driver\BTKRNL
8a67f030 88418bc8 88450e70 ( e, 0) IRP_MJ_DEVICE_CONTROL 19 \Driver\Tcpip
8a6ceca0 885cef68 885d3008 ( e, 0) IRP_MJ_DEVICE_CONTROL 2 \Driver\NdisWan
89cc2208 88920940 ( 3, 0) IRP_MJ_READ 1 \Driver\TermDD
8a6bb030 8956a008 f7c072f8 ( 3, 0) IRP_MJ_READ 2 \Driver\Kbdclass
8a6bd140 88b15008 f7db9710 ( 3, 0) IRP_MJ_READ 2 \Driver\Mouclass
0 89596a30 ( d, 0) IRP_MJ_FILE_SYSTEM_CONTROL 1 name not available
89619a98 8831cd98 88435c08 ( d, 0) IRP_MJ_FILE_SYSTEM_CONTROL 26 \FileSystem\Npfs
89619a98 842c6598 86af3280 ( 3, 0) IRP_MJ_READ 82 \FileSystem\Npfs
89bb3168 88915e70 ( 3, 0) IRP_MJ_READ 1 \FileSystem\Msfs
89ad3898 889a1338 ( e, 0) IRP_MJ_DEVICE_CONTROL 1 \Driver\SAVRT
8957b948 8854d680 8865c6d8 ( e, 0) IRP_MJ_DEVICE_CONTROL 4 \FileSystem\MRxSmb
8a685d10 89c7c7d0 ( f, 0) IRP_MJ_INTERNAL_DEVICE_CONTROL 1 \Driver\usbehci
89d694c8 896d47d0 89683838 ( f, 0) IRP_MJ_INTERNAL_DEVICE_CONTROL 4 \Driver\usbuhci
8956e198 88870c08 88974698 ( 3, 0) IRP_MJ_READ 2 \Driver\SPBBCDrv
89bb2030 8885dec8 ( e, 0) IRP_MJ_DEVICE_CONTROL 1 \Driver\IPSec
89cba030 886542a0 8865a5f0 ( e, 0) IRP_MJ_DEVICE_CONTROL 6 \Driver\IpNat
8957f598 88444738 88a6c5d0 ( e, 0) IRP_MJ_DEVICE_CONTROL 2 \Driver\NetBT
895ae540 889cc990 889cdc18 ( e,2d) IRP_MJ_DEVICE_CONTROL 3 \Driver\AFD
895ae540 885f76a8 889df4a8 ( e, 9) IRP_MJ_DEVICE_CONTROL 5 \Driver\AFD
895ae540 885c7640 885c7bd0 ( e,43) IRP_MJ_DEVICE_CONTROL 10 \Driver\AFD
895ae540 88a39720 88b05530 ( e, 3) IRP_MJ_DEVICE_CONTROL 3 \Driver\AFD
895ae540 886b26a8 88a6d730 ( e,20) IRP_MJ_DEVICE_CONTROL 2 \Driver\AFD
88a64990 88982a30 ( 3, 0) IRP_MJ_READ 1 \Driver\Ndisuio
889b5030 889dd828 ( e, 0) IRP_MJ_DEVICE_CONTROL 1 \Driver\irda
889a5cd0 88663dd0 886652b8 ( 3, 0) IRP_MJ_READ 4 \Driver\AegisP
8a68af38 884ff4a8 885024b0 ( e, 0) IRP_MJ_DEVICE_CONTROL 20 \Driver\HTTP
0 89cc1a28 89d89008 ( 0, 0) IRP_MJ_CREATE 2 name not available

Driver IRP[0] IRP[1] Maj/Min Function Count Name of Driver

42 Drivers with 1 or more Active IRPs, accounting for 376 of 376 Active IRPs


// First looking at the NTFS IRPs, showing us pending in FltMgr, a filter driver wants
// to act on these writes (symevent.sys), but it isn't able to yet because something
// further up the tree is pending (also note csrss.exe as the handle object):
1: kd> !drvobj 89d69b78
Driver object (89d69b78) is for:
\FileSystem\Ntfs
Driver Extension List: (id , addr)

Device Object list:
8a6e0020 89d69a60

1: kd> !devobj 8a6e0020
Device object (8a6e0020) is for:
\FileSystem\Ntfs DriverObject 89d69b78
Current Irp 00000000 RefCount 0 Type 00000008 Flags 00000000
DevExt 8a6e00d8 DevObjExt 8a6e0880
ExtensionFlags (0000000000)
AttachedDevice (Upper) 89d6a268 \FileSystem\FltMgr
Device queue is not busy.

1: kd> !devobj 89d69a60
Device object (89d69a60) is for:
Ntfs \FileSystem\Ntfs DriverObject 89d69b78
Current Irp 00000000 RefCount 1 Type 00000008 Flags 00000040
Dacl e101690c DevExt 00000000 DevObjExt 89d69b18
ExtensionFlags (0000000000)
AttachedDevice (Upper) 8a69ccb8 \FileSystem\FltMgr
Device queue is not busy.

1: kd> !irp 87e7ad98
Irp is active with 14 stacks 13 is current (= 0x87e7afb8)
No Mdl: No System Buffer: Thread 88a6f3e8: Irp stack trace.
cmd flg cl Device File Completion-Context
[ 0, 0] 0 0 00000000 00000000 00000000-00000000

Args: 00000000 00000000 00000000 00000000
[ 0, 0] 0 0 00000000 00000000 00000000-00000000

Args: 00000000 00000000 00000000 00000000
[ 0, 0] 0 0 00000000 00000000 00000000-00000000

Args: 00000000 00000000 00000000 00000000
[ 0, 0] 0 0 00000000 00000000 00000000-00000000

Args: 00000000 00000000 00000000 00000000
[ 0, 0] 0 0 00000000 00000000 00000000-00000000

Args: 00000000 00000000 00000000 00000000
[ 0, 0] 0 0 00000000 00000000 00000000-00000000

Args: 00000000 00000000 00000000 00000000
[ 0, 0] 0 0 00000000 00000000 00000000-00000000

Args: 00000000 00000000 00000000 00000000
[ 0, 0] 0 0 00000000 00000000 00000000-00000000

Args: 00000000 00000000 00000000 00000000
[ 0, 0] 0 0 00000000 00000000 00000000-00000000

Args: 00000000 00000000 00000000 00000000
[ 0, 0] 0 0 00000000 00000000 00000000-00000000

Args: 00000000 00000000 00000000 00000000
[ 0, 0] 0 0 00000000 00000000 00000000-00000000

Args: 00000000 00000000 00000000 00000000
[ 0, 0] 0 0 00000000 00000000 00000000-00000000

Args: 00000000 00000000 00000000 00000000
>[ c, 2] 0 1 8a6e0020 88a53928 00000000-00000000 pending
\FileSystem\Ntfs
Args: 00001000 00000c5b 00000000 00000000
[ c, 2] 0 0 89b0a870 88a53928 00000000-00000000
\Driver\SymEvent
Args: 00001000 00000c5b 00000000 00000000

1: kd> !fileobj 88a53928

\WINDOWS

Device Object: 0x89d6c030 \Driver\Ftdisk
Vpb: 0x8a6bf7b0
Access: Read SharedRead SharedWrite

Flags: 0x40000
Handle Created

FsContext: 0xe17dbd20 FsContext2: 0xe1232838
CurrentByteOffset: 0

1: kd> !handle 00000c5b
processor number 1, process 8951c020
PROCESS 8951c020 SessionId: 0 Cid: 037c Peb: 7ffdf000 ParentCid: 034c
DirBase: 20d90000 ObjectTable: e4bac9f0 HandleCount: 816.
Image: csrss.exe

Handle table at e7db8000 with 816 Entries in use
0c5b: Object: 882318c8 GrantedAccess: 001f03ff Entry: e7db98b0
Object: 882318c8 Type: (8a75b730) Thread
ObjectHeader: 882318b0 (old version)
HandleCount: 1 PointerCount: 3

1: kd> !irp 88127b20
Irp is active with 14 stacks 13 is current (= 0x88127d40)
No Mdl: No System Buffer: Thread 88a6f3e8: Irp stack trace.
cmd flg cl Device File Completion-Context
[ 0, 0] 0 0 00000000 00000000 00000000-00000000

Args: 00000000 00000000 00000000 00000000
[ 0, 0] 0 0 00000000 00000000 00000000-00000000

Args: 00000000 00000000 00000000 00000000
[ 0, 0] 0 0 00000000 00000000 00000000-00000000

Args: 00000000 00000000 00000000 00000000
[ 0, 0] 0 0 00000000 00000000 00000000-00000000

Args: 00000000 00000000 00000000 00000000
[ 0, 0] 0 0 00000000 00000000 00000000-00000000

Args: 00000000 00000000 00000000 00000000
[ 0, 0] 0 0 00000000 00000000 00000000-00000000

Args: 00000000 00000000 00000000 00000000
[ 0, 0] 0 0 00000000 00000000 00000000-00000000

Args: 00000000 00000000 00000000 00000000
[ 0, 0] 0 0 00000000 00000000 00000000-00000000

Args: 00000000 00000000 00000000 00000000
[ 0, 0] 0 0 00000000 00000000 00000000-00000000

Args: 00000000 00000000 00000000 00000000
[ 0, 0] 0 0 00000000 00000000 00000000-00000000

Args: 00000000 00000000 00000000 00000000
[ 0, 0] 0 0 00000000 00000000 00000000-00000000

Args: 00000000 00000000 00000000 00000000
[ 0, 0] 0 0 00000000 00000000 00000000-00000000

Args: 00000000 00000000 00000000 00000000
>[ c, 2] 0 1 8a6e0020 88a04838 00000000-00000000 pending
\FileSystem\Ntfs
Args: 00001000 00000c5b 00000000 00000000
[ c, 2] 0 0 89b0a870 88a04838 00000000-00000000
\Driver\SymEvent
Args: 00001000 00000c5b 00000000 00000000

1: kd> !fileobj 88a04838

\WINDOWS\system32

Device Object: 0x89d6c030 \Driver\Ftdisk
Vpb: 0x8a6bf7b0
Access: Read SharedRead SharedWrite

Flags: 0x40000
Handle Created

FsContext: 0xe17c8d20 FsContext2: 0xe1278780


// Now we go to look at Npfs (named pipe file system), to try and determine what it
// is further up the tree that is pending:
1: kd> !drvobj 89619a98
Driver object (89619a98) is for:
\FileSystem\Npfs
Driver Extension List: (id , addr)

Device Object list:
89bb6030

1: kd> !devobj 89bb6030
Device object (89bb6030) is for:
NamedPipe \FileSystem\Npfs DriverObject 89619a98
Current Irp 00000000 RefCount 204 Type 00000011 Flags 00000240
Dacl e17d9774 DevExt 89bb60e8 DevObjExt 89bb6188
ExtensionFlags (0000000000)
Device queue is not busy.

1: kd> !irp 842c6598
Irp is active with 1 stacks 1 is current (= 0x842c6608)
No Mdl: No System Buffer: Thread 88a2d020: Irp stack trace.
cmd flg cl Device File Completion-Context
>[ 3, 0] 0 1 89bb6030 87c554f0 00000000-00000000 pending
\FileSystem\Npfs
Args: 00000400 00000000 00000000 00000000
1: kd> !fileobj 87c554f0

\lsass

Device Object: 0x89bb6030 \FileSystem\Npfs
Vpb is NULL

Flags: 0x40080
Named Pipe
Handle Created

FsContext: 0xe7fe8449 FsContext2: 0x88961bc0
Private Cache Map: 0x00000001
CurrentByteOffset: 0

1: kd> !irp 86af3280
Irp is active with 1 stacks 1 is current (= 0x86af32f0)
No Mdl: No System Buffer: Thread 88711658: Irp stack trace.
cmd flg cl Device File Completion-Context
>[ 3, 0] 0 1 89bb6030 88711e58 00000000-00000000 pending
\FileSystem\Npfs
Args: 00000216 00000000 00000000 00000000

// We can see that there is an IRP to the network namespace:
1: kd> !fileobj 88711e58

\net\NtControlPipe31

Device Object: 0x89bb6030 \FileSystem\Npfs
Vpb is NULL

Flags: 0x40082
Synchronous IO
Named Pipe
Handle Created

File Object is currently busy and has 0 waiters.

FsContext: 0xe73e9458 FsContext2: 0x88711490
Private Cache Map: 0x00000001
CurrentByteOffset: 0

1: kd> !irp 8831cd98
Irp is active with 1 stacks 1 is current (= 0x8831ce08)
No Mdl: No System Buffer: Thread 88a2d020: Irp stack trace.
cmd flg cl Device File Completion-Context
>[ d, 0] 5 1 89bb6030 88477bc8 00000000-00000000 pending
\FileSystem\Npfs
Args: 00000000 00000000 00110008 00000000
1: kd> !fileobj 88477bc8

\lsass

Device Object: 0x89bb6030 \FileSystem\Npfs
Vpb is NULL

Flags: 0x40080
Named Pipe
Handle Created

FsContext: 0xe7e3b3f1 FsContext2: 0xfa0d3280
Private Cache Map: 0x00000001
CurrentByteOffset: 0


// We can see that there is an IRP to the workstation service:
1: kd> !irp 88435c08
Irp is active with 1 stacks 1 is current (= 0x88435c78)
No Mdl: No System Buffer: Thread ff6a1b38: Irp stack trace.
cmd flg cl Device File Completion-Context
>[ d, 0] 5 1 89bb6030 886752d0 00000000-00000000 pending
\FileSystem\Npfs
Args: 00000000 00000000 00110008 00000000
1: kd> !fileobj 886752d0

\wkssvc

Device Object: 0x89bb6030 \FileSystem\Npfs
Vpb is NULL

Flags: 0x40080
Named Pipe
Handle Created

FsContext: 0xe8601429 FsContext2: 0x886754d0
Private Cache Map: 0x00000001
CurrentByteOffset: 0


// Knowing the workstation service and the network is where our IRPs are going, we should
// start looking at the Tcpip IRPs, because we're definitely hanging up here...:
1: kd> !drvobj 8a67f030
Driver object (8a67f030) is for:
\Driver\Tcpip
Driver Extension List: (id , addr)

Device Object list:
89603668 8961fa60 8961fb78 895cd388
89cc7030

// ...and here it is, SYMTDI.SYS doing heap operations - note these IRPs won't complete
// until SYMTDI finishes it's heap operations:
1: kd> !irp 88418bc8
Irp is active with 2 stacks 1 is current (= 0x88418c38)
No Mdl: No System Buffer: Thread 885ff8d0: Irp stack trace.
cmd flg cl Device File Completion-Context
>[ e, 0] 0 e1 89cc7030 895816c8 a9fa2db0-886af200 Success Error Cancel pending
\Driver\Tcpip SYMTDI!rHeapFree
Args: 00000000 00000000 00120034 00000000
[ e, 0] 0 0 89576ab0 895816c8 00000000-00000000
\Driver\SYMTDI
Args: 00000000 00000000 00120034 00000000

1: kd> !irp 88450e70
Irp is active with 2 stacks 1 is current (= 0x88450ee0)
No Mdl: No System Buffer: Thread 885ff8d0: Irp stack trace.
cmd flg cl Device File Completion-Context
>[ e, 0] 0 e1 89cc7030 895816c8 a9fa2db0-896b0568 Success Error Cancel pending
\Driver\Tcpip SYMTDI!rHeapFree
Args: 00000000 00000000 00120038 00000000
[ e, 0] 0 0 89576ab0 895816c8 00000000-00000000
\Driver\SYMTDI
Args: 00000000 00000000 00120038 00000000

1: kd> !fileobj 895816c8



Device Object: 0x89cc7030 \Driver\Tcpip
Vpb is NULL

Flags: 0x40000
Handle Created

CurrentByteOffset: 0


1: kd> lmvm symtdi
start end module name
a9f8f000 a9fca000 SYMTDI (export symbols) SYMTDI.SYS
Loaded symbol image file: SYMTDI.SYS
Image path: \SystemRoot\System32\Drivers\SYMTDI.SYS
Image name: SYMTDI.SYS
Timestamp: Mon Aug 07 18:52:32 2006 (44D7C430)
CheckSum: 00030C5E
ImageSize: 0003B000
Translations: 0000.04b0 0000.04e4 0409.04b0 0409.04e4

1: kd> lmvm symevent
start end module name
aa1ae000 aa1d0000 SYMEVENT (export symbols) SYMEVENT.SYS
Loaded symbol image file: SYMEVENT.SYS
Image path: \??\C:\Program Files\Symantec\SYMEVENT.SYS
Image name: SYMEVENT.SYS
Timestamp: Mon Sep 18 20:52:19 2006 (450F3F43)
CheckSum: 0001BF20
ImageSize: 00022000
Translations: 0000.04b0 0000.04e4 0409.04b0 0409.04e4

I don't know how old your Symantec Antivirus engine is on this machine, but it's definitely VERY out of date. Note Symantec updates BOTH it's virus definitions AND it's engines, but it only auto updates the virus defs. You can find the latest versions of symevent and symtdi.sys from here. This isn't guaranteed, of course, to solve your issues, but it's the best "first step" you can take. If the problems persist, uninstall SYMTDI (the email scanning component of Symantec Antivirus).

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