It's been a while but the problem listed above is still occuring . I tried many things and finally managed to get a dump (the pagefile needed to be on C: for it to work).

Here is the complete dump, feel free to tell me if anything can be done with it :

Opened log file 'c:\debuglog.txt'

Microsoft (R) Windows Debugger Version 6.6.0003.5
Copyright (c) Microsoft Corporation. All rights reserved.


Loading Dump File [C:\WINDOWS\Minidump\Mini040506-02.dmp]
Mini Kernel Dump File: Only registers and stack trace are available

Symbol search path is: SRV*c:\symbols*http://msdl.microsoft.com/download/symbols
Executable search path is: C:\WINDOWS;C:\WINDOWS\system32;C:\WINDOWS\system32 \drivers
Windows XP Kernel Version 2600 (Service Pack 2) UP Free x86 compatible
Product: WinNt, suite: TerminalServer SingleUserTS
Built by: 2600.xpsp_sp2_gdr.050301-1519
Kernel base = 0x804d7000 PsLoadedModuleList = 0x805531a0
Debug session time: Wed Apr 5 16:24:44.031 2006 (GMT+2)
System Uptime: 0 days 0:01:14.593
Loading Kernel Symbols
.................................................. .................................................. ..................................................
Loading User Symbols
Loading unloaded module list
..
************************************************** *****************************
* *
* Bugcheck Analysis *
* *
************************************************** *****************************

Use !analyze -v to get detailed debugging information.

BugCheck 100000D1, {33435350, 2, 0, b50b9eb9}

*** ERROR: Module load completed but symbols could not be loaded for NETFLT.SYS
Probably caused by : NETFLT.SYS ( NETFLT+72df )

Followup: MachineOwner
---------

kd> !analyze -v;r;kv;lmtn;.logclose;q
************************************************** *****************************
* *
* Bugcheck Analysis *
* *
************************************************** *****************************

DRIVER_IRQL_NOT_LESS_OR_EQUAL (d1)
An attempt was made to access a pageable (or completely invalid) address at an
interrupt request level (IRQL) that is too high. This is usually
caused by drivers using improper addresses.
If kernel debugger is available get stack backtrace.
Arguments:
Arg1: 33435350, memory referenced
Arg2: 00000002, IRQL
Arg3: 00000000, value 0 = read operation, 1 = write operation
Arg4: b50b9eb9, address which referenced memory

Debugging Details:
------------------


READ_ADDRESS: 33435350

CURRENT_IRQL: 2

FAULTING_IP:
psched!MpSend+97
b50b9eb9 833901 cmp dword ptr [ecx],0x1

CUSTOMER_CRASH_COUNT: 2

DEFAULT_BUCKET_ID: DRIVER_FAULT

BUGCHECK_STR: 0xD1

LAST_CONTROL_TRANSFER: from ba50a985 to b50b9eb9

STACK_TEXT:
b53cc948 ba50a985 89aeadb8 89740720 00000000 psched!MpSend+0x97
b53cc970 ba4f52df 89a46c58 89740720 ba4f6820 NDIS!ndisMSendX+0x1d6
WARNING: Stack unwind information not available. Following frames may be wrong.
b53cc994 ba4f12a3 89740720 b53cc9b0 00000000 NETFLT+0x72df
b53cc9f0 ba4ef8f5 89af1858 883cd8a8 89701f68 NETFLT+0x32a3
b53ccbac 80543dfd 89947158 8790bf28 8790be98 NETFLT+0x18f5
b53ccbe4 8055a6c0 80544461 0000000c 00000000 nt!ExFreePoolWithTag+0x417
b53ccc44 80573b3a 89701fd8 89a7fc98 89701f68 nt!NonPagedPoolDescriptor
806d02d0 888ac933 806d0258 00800d89 80a1fffe nt!IopSynchronousServiceTail+0x60
806d02f0 c3806db0 00001fb9 ff76e800 90c3ffff 0x888ac933
806d02f4 00000000 ff76e800 90c3ffff 244cb60f 0xc3806db0


STACK_COMMAND: kb

FOLLOWUP_IP:
NETFLT+72df
ba4f52df 85c0 test eax,eax

SYMBOL_STACK_INDEX: 2

FOLLOWUP_NAME: MachineOwner

SYMBOL_NAME: NETFLT+72df

MODULE_NAME: NETFLT

IMAGE_NAME: NETFLT.SYS

DEBUG_FLR_IMAGE_TIMESTAMP: 434fcb04

FAILURE_BUCKET_ID: 0xD1_NETFLT+72df

BUCKET_ID: 0xD1_NETFLT+72df

Followup: MachineOwner
---------

eax=00000002 ebx=89aeadb8 ecx=33435350 edx=898881a8 esi=89aeadc0 edi=8974077c
eip=b50b9eb9 esp=b53cc91c ebp=b53cc948 iopl=0 nv up ei pl nz na po nc
cs=0008 ss=0010 ds=0023 es=0023 fs=0030 gs=0000 efl=00010206
psched!MpSend+0x97:
b50b9eb9 833901 cmp dword ptr [ecx],0x1 ds:0023:33435350=????????
ChildEBP RetAddr Args to Child
b53cc948 ba50a985 89aeadb8 89740720 00000000 psched!MpSend+0x97 (FPO: [Non-Fpo])
b53cc970 ba4f52df 89a46c58 89740720 ba4f6820 NDIS!ndisMSendX+0x1d6 (FPO: [Non-Fpo])
WARNING: Stack unwind information not available. Following frames may be wrong.
b53cc994 ba4f12a3 89740720 b53cc9b0 00000000 NETFLT+0x72df
b53cc9f0 ba4ef8f5 89af1858 883cd8a8 89701f68 NETFLT+0x32a3
b53ccbac 80543dfd 89947158 8790bf28 8790be98 NETFLT+0x18f5
b53ccbe4 8055a6c0 80544461 0000000c 00000000 nt!ExFreePoolWithTag+0x417 (FPO: [Non-Fpo])
b53ccc44 80573b3a 89701fd8 89a7fc98 89701f68 nt!NonPagedPoolDescriptor
806d02d0 888ac933 806d0258 00800d89 80a1fffe nt!IopSynchronousServiceTail+0x60 (FPO: [Non-Fpo])
806d02f0 c3806db0 00001fb9 ff76e800 90c3ffff 0x888ac933
806d02f4 00000000 ff76e800 90c3ffff 244cb60f 0xc3806db0
start end module name
804d7000 806cd280 nt ntkrnlpa.exe Wed Mar 02 01:34:37 2005 (42250A1D)
806ce000 806ee380 hal halaacpi.dll Wed Aug 04 07:59:05 2004 (41107B29)
9d4ec000 9d501f80 av5flt av5flt.sys Mon Aug 01 11:23:08 2005 (42EDE9FC)
9d872000 9d874700 WNMFLT WNMFLT.SYS Wed Sep 21 18:08:43 2005 (4331858B)
9d89a000 9d8b1000 PfModNT PfModNT.sys Thu Dec 08 05:20:14 2005 (4397B47E)
9d8b1000 9d8d8f00 PavProc PavProc.sys Thu Jan 08 08:54:16 2004 (3FFD0CA8)
9db09000 9db32f00 kmixer kmixer.sys Wed Aug 04 08:07:46 2004 (41107D32)
9db33000 9db55c80 aec aec.sys Fri Feb 13 16:20:15 2004 (402CEB2F)
9db7e000 9db92400 wdmaud wdmaud.sys Wed Aug 04 08:15:03 2004 (41107EE7)
9dbbb000 9dc0c300 srv srv.sys Tue May 10 02:17:49 2005 (427FFDAD)
9dc85000 9dcb1400 mrxdav mrxdav.sys Wed Aug 04 08:00:49 2004 (41107B91)
9dd2a000 9dd3b700 pavdrv51 pavdrv51.sys Mon Jun 13 16:51:39 2005 (42AD9D7B)
9fd3c000 9fd52d80 dump_nvata dump_nvata.sys Fri Aug 19 02:52:05 2005 (43052D35)
9fd53000 9fd63280 Udfs Udfs.SYS Wed Aug 04 08:00:27 2004 (41107B7B)
9fd64000 9fd84f00 ipnat ipnat.sys Thu Sep 30 00:28:36 2004 (415B3714)
9fd85000 9fdf3400 mrxsmb mrxsmb.sys Wed Jan 19 05:26:50 2005 (41EDE18A)
9fdf4000 9fe1ea00 rdbss rdbss.sys Thu Oct 28 03:13:57 2004 (418047D5)
9fe1f000 9fe40d00 afd afd.sys Wed Aug 04 08:14:13 2004 (41107EB5)
9fe41000 9fe68c00 netbt netbt.sys Wed Aug 04 08:14:36 2004 (41107ECC)
9fe69000 9fec0d80 tcpip tcpip.sys Fri Jan 13 03:28:12 2006 (43C7103C)
9fec1000 9fed3400 ipsec ipsec.sys Wed Aug 04 08:14:27 2004 (41107EC3)
b0015000 b00b1000 ctac32k ctac32k.sys Thu Dec 08 04:54:32 2005 (4397AE78)
b00b1000 b00d8000 ctsfm2k ctsfm2k.sys Thu Dec 08 04:54:41 2005 (4397AE81)
b00d8000 b0105000 emupia2k emupia2k.sys Thu Dec 08 04:54:38 2005 (4397AE7E)
b0105000 b0206000 ha10kx2k ha10kx2k.sys Thu Dec 08 04:54:56 2005 (4397AE90)
b0206000 b0230000 hap16v2k hap16v2k.sys Thu Dec 08 04:55:03 2005 (4397AE97)
b0265000 b0265b80 drmkaud drmkaud.sys Wed Aug 04 08:07:56 2004 (41107D3C)
b037b000 b037bd00 dxgthk dxgthk.sys Fri Aug 17 22:53:12 2001 (3B7D8438)
b03c7000 b03cb500 watchdog watchdog.sys Wed Aug 04 08:07:32 2004 (41107D24)
b03f6000 b03f8f80 mouhid mouhid.sys Fri Aug 17 22:47:57 2001 (3B7D82FD)
b044a000 b0459900 Cdfs Cdfs.SYS Wed Aug 04 08:14:09 2004 (41107EB1)
b045a000 b0466e80 DMusic DMusic.sys Wed Aug 04 08:07:37 2004 (41107D29)
b046a000 b0472700 wanarp wanarp.sys Wed Aug 04 08:04:57 2004 (41107C89)
b047a000 b0482880 Fips Fips.SYS Sat Aug 18 03:31:49 2001 (3B7DC585)
b048a000 b0492700 netbios netbios.sys Wed Aug 04 08:03:19 2004 (41107C27)
b049a000 b04a2d80 HIDCLASS HIDCLASS.SYS Wed Aug 04 08:08:18 2004 (41107D52)
b085c000 b0862880 ShldDrv ShldDrv.SYS Mon Aug 29 14:20:06 2005 (4312FD76)
b0864000 b086b880 Npfs Npfs.SYS Wed Aug 04 08:00:38 2004 (41107B86)
b086c000 b0870a80 Msfs Msfs.SYS Wed Aug 04 08:00:37 2004 (41107B85)
b0874000 b0879200 vga vga.sys Wed Aug 04 08:07:06 2004 (41107D0A)
b0889000 b0889b80 Null Null.SYS Fri Aug 17 22:47:39 2001 (3B7D82EB)
b08c2000 b08c4f00 ws2ifsl ws2ifsl.sys Fri Aug 17 22:55:58 2001 (3B7D84DE)
b08c6000 b08c8280 rasacd rasacd.sys Fri Aug 17 22:55:39 2001 (3B7D84CB)
b08ce000 b08d0580 hidusb hidusb.sys Fri Aug 17 23:02:16 2001 (3B7D8658)
b0988000 b098e180 HIDPARSE HIDPARSE.SYS Wed Aug 04 08:08:15 2004 (41107D4F)
b0990000 b0995000 flpydisk flpydisk.sys Wed Aug 04 07:59:24 2004 (41107B3C)
b504c000 b507f200 update update.sys Wed Aug 04 07:58:32 2004 (41107B08)
b5080000 b50b0100 rdpdr rdpdr.sys Wed Aug 04 08:01:10 2004 (41107BA6)
b50b1000 b50c1e00 psched psched.sys Wed Aug 04 08:04:16 2004 (41107C60)
b50c2000 b50d8680 ndiswan ndiswan.sys Wed Aug 04 08:14:30 2004 (41107EC6)
b50d9000 b50ec900 parport parport.sys Wed Aug 04 07:59:04 2004 (41107B28)
b51ac000 b51c3800 SCSIPORT SCSIPORT.SYS Wed Aug 04 07:59:39 2004 (41107B4B)
b5750000 b5759480 NDProxy NDProxy.SYS Fri Aug 17 22:55:30 2001 (3B7D84C2)
b5790000 b579c880 rasl2tp rasl2tp.sys Wed Aug 04 08:14:21 2004 (41107EBD)
b58a1000 b58a4c80 mssmbios mssmbios.sys Wed Aug 04 08:07:47 2004 (41107D33)
b58c5000 b58caa00 mouclass mouclass.sys Wed Aug 04 07:58:32 2004 (41107B08)
b58cd000 b58d1080 raspti raspti.sys Fri Aug 17 22:55:32 2001 (3B7D84C4)
b58d5000 b58d9580 ptilink ptilink.sys Fri Aug 17 22:49:53 2001 (3B7D8371)
b58dd000 b58e1880 TDI TDI.SYS Wed Aug 04 08:07:47 2004 (41107D33)
b58e5000 b58eb000 kbdclass kbdclass.sys Wed Aug 04 07:58:32 2004 (41107B08)
b58ed000 b58ee000 fdc fdc.sys unavailable (00000000)
b5915000 b5923100 usbhub usbhub.sys Wed Aug 04 08:08:40 2004 (41107D68)
b5925000 b592d900 msgpc msgpc.sys Wed Aug 04 08:04:11 2004 (41107C5B)
b5935000 b5940d00 raspptp raspptp.sys Wed Aug 04 08:14:26 2004 (41107EC2)
b5945000 b594f200 raspppoe raspppoe.sys Wed Aug 04 08:05:06 2004 (41107C92)
b5985000 b598ef00 termdd termdd.sys Wed Aug 04 07:58:52 2004 (41107B1C)
b59b5000 b59b7580 ndistapi ndistapi.sys Fri Aug 17 22:55:29 2001 (3B7D84C1)
b59b9000 b59bcc80 serenum serenum.sys Wed Aug 04 07:59:06 2004 (41107B2A)
b5e31000 b5e40d80 serial serial.sys Wed Aug 04 08:15:51 2004 (41107F17)
b5e61000 b5e6de00 i8042prt i8042prt.sys Wed Aug 04 08:14:36 2004 (41107ECC)
b5ea1000 b5ea4280 ndisuio ndisuio.sys Wed Aug 04 08:03:10 2004 (41107C1E)
b6473000 b6473c00 audstub audstub.sys Fri Aug 17 22:59:40 2001 (3B7D85BC)
b6474000 b6474a00 LMImirr LMImirr.sys Wed Aug 18 20:44:49 2004 (4123A3A1)
b6475000 b6475b80 msmpu401 msmpu401.sys Fri Aug 17 22:59:59 2001 (3B7D85CF)
b6655000 b6656a80 ParVdm ParVdm.SYS Fri Aug 17 22:49:49 2001 (3B7D836D)
b87ad000 b87af900 Dxapi Dxapi.sys Fri Aug 17 22:53:19 2001 (3B7D843F)
b8f0d000 b8f57000 dtscsi dtscsi.sys Sat Dec 10 15:33:44 2005 (439AE748)
b8f57000 b8f6a780 VIDEOPRT VIDEOPRT.SYS Wed Aug 04 08:07:04 2004 (41107D08)
b8f6b000 b90e9000 ati2mtag ati2mtag.sys Wed Feb 22 04:46:24 2006 (43FBDE90)
b90e9000 b911bd80 NVSNPU NVSNPU.SYS Wed Apr 06 12:22:01 2005 (4253B849)
b911c000 b915bf00 NVNRM NVNRM.SYS Wed Apr 06 12:22:11 2005 (4253B853)
b915c000 b9197b80 yk51x86 yk51x86.sys Fri Feb 17 11:31:09 2006 (43F5A5ED)
b9198000 b91ca000 ctoss2k ctoss2k.sys Thu Dec 08 04:54:51 2005 (4397AE8B)
b91ca000 b91ed980 portcls portcls.sys Wed Aug 04 08:15:47 2004 (41107F13)
b91ee000 b9259400 ctaud2k ctaud2k.sys Thu Dec 08 04:55:43 2005 (4397AEBF)
b96e1000 b9703680 ks ks.sys Wed Aug 04 08:15:20 2004 (41107EF8)
b9704000 b9726e80 USBPORT USBPORT.SYS Wed Aug 04 08:08:34 2004 (41107D62)
b9737000 b9745b80 drmk drmk.sys Wed Aug 04 08:07:54 2004 (41107D3A)
b9747000 b9751380 imapi imapi.sys Wed Aug 04 08:00:12 2004 (41107B6C)
b9c48000 b9c4b280 nvnetbus nvnetbus.sys Wed Apr 06 12:22:28 2005 (4253B864)
ba451000 ba453980 gameenum gameenum.sys Wed Aug 04 08:08:20 2004 (41107D54)
ba4c1000 ba4db580 Mup Mup.sys Wed Aug 04 08:15:20 2004 (41107EF8)
ba4dc000 ba4ee000 sfdrv01 sfdrv01.sys Wed Aug 10 14:44:03 2005 (42F9F693)
ba4ee000 ba509300 NETFLT NETFLT.SYS Fri Oct 14 17:13:08 2005 (434FCB04)
ba50a000 ba536a80 NDIS NDIS.sys Wed Aug 04 08:14:27 2004 (41107EC3)
ba537000 ba5c3480 Ntfs Ntfs.sys Wed Aug 04 08:15:06 2004 (41107EEA)
ba5c4000 ba5da780 KSecDD KSecDD.sys Wed Aug 04 07:59:45 2004 (41107B51)
ba5db000 ba5ecf00 sr sr.sys Wed Aug 04 08:06:22 2004 (41107CDE)
ba5ed000 ba60b780 fltMgr fltMgr.sys Wed Aug 04 08:01:17 2004 (41107BAD)
ba60c000 ba622d80 nvata nvata.sys Fri Aug 19 02:52:05 2005 (43052D35)
ba623000 ba63a480 atapi atapi.sys Wed Aug 04 07:59:41 2004 (41107B4D)
ba63b000 ba660700 dmio dmio.sys Wed Aug 04 08:07:13 2004 (41107D11)
ba661000 ba67f880 ftdisk ftdisk.sys Fri Aug 17 22:52:41 2001 (3B7D8419)
ba680000 ba690a80 pci pci.sys Wed Aug 04 08:07:45 2004 (41107D31)
ba691000 ba6bed80 ACPI ACPI.sys Wed Aug 04 08:07:35 2004 (41107D27)
ba6bf000 ba6d6800 SPTD1485 SPTD1485.SYS Wed Aug 04 07:59:39 2004 (41107B4B)
ba6d7000 ba7a7000 sptd sptd.sys Sat Dec 03 14:59:59 2005 (4391A4DF)
ba8a8000 ba8b0c00 isapnp isapnp.sys Fri Aug 17 22:58:01 2001 (3B7D8559)
ba8b8000 ba8c6e80 ohci1394 ohci1394.sys Wed Aug 04 08:10:05 2004 (41107DBD)
ba8c8000 ba8d5000 1394BUS 1394BUS.SYS Wed Aug 04 08:10:03 2004 (41107DBB)
ba8d8000 ba8e2500 MountMgr MountMgr.sys Wed Aug 04 07:58:29 2004 (41107B05)
ba8e8000 ba8f1000 sfsync02 sfsync02.sys Wed Aug 10 16:06:28 2005 (42FA09E4)
ba8f8000 ba904c80 VolSnap VolSnap.sys Wed Aug 04 08:00:14 2004 (41107B6E)
ba908000 ba910e00 disk disk.sys Wed Aug 04 07:59:53 2004 (41107B59)
ba918000 ba924200 CLASSPNP CLASSPNP.SYS Wed Aug 04 08:14:26 2004 (41107EC2)
ba9f8000 baa05400 swmidi swmidi.sys Fri Aug 17 23:00:42 2001 (3B7D85FA)
baa18000 baa26d80 sysaudio sysaudio.sys Wed Aug 04 08:15:54 2004 (41107F1A)
baa68000 baa70a00 processr processr.sys Wed Aug 04 07:59:14 2004 (41107B32)
baa78000 baa84180 cdrom cdrom.sys Wed Aug 04 07:59:52 2004 (41107B58)
baa88000 baa96080 redbook redbook.sys Wed Aug 04 07:59:34 2004 (41107B46)
bab28000 bab2e200 PCIIDEX PCIIDEX.SYS Wed Aug 04 07:59:40 2004 (41107B4C)
bab30000 bab34900 PartMgr PartMgr.sys Sat Aug 18 03:32:23 2001 (3B7DC5A7)
bab38000 bab3ce20 PxHelp20 PxHelp20.sys Wed Feb 02 00:23:42 2005 (42000F7E)
bab40000 bab48000 sfhlp02 sfhlp02.sys Mon May 16 15:20:39 2005 (42889E27)
baba8000 babac280 usbohci usbohci.sys Wed Aug 04 08:08:34 2004 (41107D62)
babb0000 babb6800 usbehci usbehci.sys Wed Aug 04 08:08:34 2004 (41107D62)
babe0000 babe4100 cpoint cpoint.sys Fri Aug 12 14:36:57 2005 (42FC97E9)
bac20000 bac28000 ctprxy2k ctprxy2k.sys Thu Dec 08 04:55:47 2005 (4397AEC3)
bac88000 bac8f480 DSAFLT DSAFLT.SYS Wed Sep 21 18:07:48 2005 (43318554)
bacb8000 bacbb000 BOOTVID BOOTVID.dll Fri Aug 17 22:49:09 2001 (3B7D8345)
bada8000 bada9b80 kdcom kdcom.dll Fri Aug 17 22:49:10 2001 (3B7D8346)
badaa000 badab100 WMILIB WMILIB.SYS Fri Aug 17 23:07:23 2001 (3B7D878B)
badac000 badad700 dmload dmload.sys Fri Aug 17 22:58:15 2001 (3B7D8567)
badc2000 badc3420 ASACPI ASACPI.sys Fri Aug 13 04:52:52 2004 (411C2D04)
badc4000 badc5100 swenum swenum.sys Wed Aug 04 07:58:41 2004 (41107B11)
badc6000 badc7280 USBD USBD.SYS Fri Aug 17 23:02:58 2001 (3B7D8682)
bae0c000 bae0d900 splitter splitter.sys Wed Aug 04 08:07:46 2004 (41107D32)
bae1a000 bae1bf00 Fs_Rec Fs_Rec.SYS Fri Aug 17 22:49:37 2001 (3B7D8361)
bae1c000 bae1d080 Beep Beep.SYS Fri Aug 17 22:47:33 2001 (3B7D82E5)
bae1e000 bae1f080 mnmdd mnmdd.SYS Fri Aug 17 22:57:28 2001 (3B7D8538)
bae20000 bae21080 RDPCDD RDPCDD.sys Fri Aug 17 22:46:56 2001 (3B7D82C0)
bae2c000 bae2d100 dump_WMILIB dump_WMILIB.SYS Fri Aug 17 23:07:23 2001 (3B7D878B)
bae6c000 bae6d880 RaInfo RaInfo.sys Mon Apr 12 11:39:30 2004 (407A63D2)
bae70000 bae70d00 pciide pciide.sys Fri Aug 17 22:51:49 2001 (3B7D83E5)
bf800000 bf9c1180 win32k win32k.sys Thu Oct 06 02:05:44 2005 (43446A58)
bf9c2000 bf9d3580 dxg dxg.sys Wed Aug 04 08:00:51 2004 (41107B93)
bf9d4000 bfa16000 ati2dvag ati2dvag.dll Wed Feb 22 04:46:46 2006 (43FBDEA6)
bfa16000 bfa55000 ati2cqag ati2cqag.dll Wed Feb 22 04:04:48 2006 (43FBD4D0)
bfa55000 bfa8b000 atikvmag atikvmag.dll Wed Feb 22 04:11:01 2006 (43FBD645)
bfa8b000 bfd0eb80 ati3duag ati3duag.dll Wed Feb 22 04:30:43 2006 (43FBDAE3)
bfd0f000 bfde1140 ativvaxx ativvaxx.dll Wed Feb 22 04:24:28 2006 (43FBD96C)

Unloaded modules:
b087c000 b0881000 Cdaudio.SYS
Timestamp: unavailable (00000000)
Checksum: 00000000
b08ca000 b08cd000 Sfloppy.SYS
Timestamp: unavailable (00000000)
Checksum: 00000000
Closing open log file c:\debuglog.txt

NETFLT.SYS is a Panda Anti-Virus driver.

Just as a test remove Panda from your start-up list:

start/run msconfig > startup

I uninstalled (to check this file was deleted) and reinstalled panda. So far, no BSOD, but as its very random, I can't know for sure if it's ok .

Thanks for the tip.