System restarts randomly. [HJT Log]

I have XP MCE 2005 installed on my laptop. For some days, the system restarts/hangs automatically any time ranging from boot time to working. I have AVG antivirus and Zone Alarm Firewall installed. I am posting my HJT Log here, please suggest any solutions.. Thanks in advance..!

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 1:33:39 AM, on 8/16/2008
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v8.00 (8.00.6001.17184)
Boot mode: Normal

Running processes:
F:\WINDOWS\System32\smss.exe
F:\WINDOWS\system32\winlogon.exe
F:\WINDOWS\system32\services.exe
F:\WINDOWS\system32\lsass.exe
F:\WINDOWS\system32\svchost.exe
F:\WINDOWS\System32\svchost.exe
F:\WINDOWS\system32\spoolsv.exe
F:\WINDOWS\Explorer.EXE
F:\WINDOWS\RTHDCPL.EXE
F:\WINDOWS\system32\rundll32.exe
F:\WINDOWS\AGRSMMSG.exe
F:\PROGRA~1\AVG\AVG8\avgtray.exe
F:\WINDOWS\vsnp2uvc.exe
F:\Program Files\D-Tools\daemon.exe
F:\Program Files\Folder Guard Pro\FGKey.exe
F:\WINDOWS\system32\ctfmon.exe
C:\Program Files\024h Lucky Reminder\LuckyReminder.exe
D:\My Programs\Little Clock.exe
F:\PROGRA~1\AVG\AVG8\avgwdsvc.exe
F:\Program Files\Bonjour\mDNSResponder.exe
F:\WINDOWS\system32\nvsvc32.exe
F:\Program Files\Microsoft SQL Server\90\Shared\sqlwriter.exe
F:\WINDOWS\system32\svchost.exe
F:\PROGRA~1\AVG\AVG8\avgrsx.exe
F:\PROGRA~1\AVG\AVG8\avgemc.exe
F:\WINDOWS\system32\wuauclt.exe
F:\Program Files\Trend Micro\HijackThis\HijackThis.exe
\?\F:\WINDOWS\system32\WBEM\WMIADAP.EXE

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = about:blank
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://go.microsoft.com/fwlink/?LinkId=69157
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://go.microsoft.com/fwlink/?LinkId=54896
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://go.microsoft.com/fwlink/?LinkId=69157
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = 127.0.0.1;*.local
O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - F:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O2 - BHO: WormRadar.com IESiteBlocker.NavFilter - {3CA2F312-6F6E-4B53-A66E-4E65E497C8C0} - F:\Program Files\AVG\AVG8\avgssie.dll
O2 - BHO: Megaupload Toolbar - {4E7BD74F-2B8D-469E-CCB0-B130EEDBE97C} - F:\PROGRA~1\MEGAUP~1\MEGAUP~1.DLL
O2 - BHO: Adobe PDF Conversion Toolbar Helper - {AE7CD045-E861-484f-8273-0445EE161910} - F:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEFavClient.dll
O2 - BHO: ZoneAlarm Spy Blocker BHO - {F0D4B231-DA4B-4daf-81E4-DFEE4931A4AA} - F:\Program Files\ZoneAlarmSB\bar\1.bin\SPYBLOCK.DLL
O2 - BHO: SmartSelect - {F4971EE7-DAA0-4053-9964-665D8EE6A077} - F:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEFavClient.dll
O3 - Toolbar: Megaupload Toolbar - {4E7BD74F-2B8D-469E-CCB0-B130EEDBE97C} - F:\PROGRA~1\MEGAUP~1\MEGAUP~1.DLL
O3 - Toolbar: ZoneAlarm Spy Blocker - {F0D4B239-DA4B-4daf-81E4-DFEE4931A4AA} - F:\Program Files\ZoneAlarmSB\bar\1.bin\SPYBLOCK.DLL
O3 - Toolbar: Adobe PDF - {47833539-D0C5-4125-9FA8-0819E2EAAC93} - F:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEFavClient.dll
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE F:\WINDOWS\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [RTHDCPL] RTHDCPL.EXE
O4 - HKLM\..\Run: [SkyTel] SkyTel.EXE
O4 - HKLM\..\Run: [Alcmtr] ALCMTR.EXE
O4 - HKLM\..\Run: [AGRSMMSG] AGRSMMSG.exe
O4 - HKLM\..\Run: [AVG8_TRAY] F:\PROGRA~1\AVG\AVG8\avgtray.exe
O4 - HKLM\..\Run: [snp2uvc] F:\WINDOWS\vsnp2uvc.exe
O4 - HKLM\..\Run: [DAEMON Tools-1033] "F:\Program Files\D-Tools\daemon.exe" -lang 1033
O4 - HKLM\..\Run: [ZoneAlarm Client] "F:\Program Files\Zone Labs\ZoneAlarm\zlclient.exe "
O4 - HKLM\..\Run: [FG_Monitor] F:\Program Files\Folder Guard Pro\FGKey.exe /Start
O4 - HKCU\..\Run: [ctfmon.exe] F:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [024h Lucky Reminder] "c:\Program Files\024h Lucky Reminder\LuckyReminder.exe" /m
O4 - HKUS\S-1-5-18\..\Run: [PcSync] F:\Program Files\Nokia\Nokia PC Suite 6\PcSync2.exe /NoDialog (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [PcSync] F:\Program Files\Nokia\Nokia PC Suite 6\PcSync2.exe /NoDialog (User 'Default user')
O4 - Startup: TransBar.lnk = F:\WINDOWS\BricoPacks\Vista Inspirat 2\TransBar\TransBar.exe
O4 - Global Startup: Little Clock.lnk = D:\My Programs\Little Clock.exe
O8 - Extra context menu item: &Clean Traces - F:\Program Files\DAP\Privacy Package\dapcleanerie.htm
O8 - Extra context menu item: &Download with &DAP - F:\Program Files\DAP\dapextie.htm
O8 - Extra context menu item: Append Link Target to Existing PDF - res://F:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEFavClient.dll/AcroIEAppendSelLinks.html
O8 - Extra context menu item: Append to Existing PDF - res://F:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEFavClient.dll/AcroIEAppend.html
O8 - Extra context menu item: Convert Link Target to Adobe PDF - res://F:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEFavClient.dll/AcroIECaptureSelLinks.html
O8 - Extra context menu item: Convert to Adobe PDF - res://F:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEFavClient.dll/AcroIECapture.html
O8 - Extra context menu item: Download &all with DAP - F:\Program Files\DAP\dapextie2.htm
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office12\EXCEL.EXE/3000
O9 - Extra button: Send to OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\PROGRA~1\MICROS~2\Office12\ONBttnIE.dll
O9 - Extra 'Tools' menuitem: S&end to OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\PROGRA~1\MICROS~2\Office12\ONBttnIE.dll
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\Office12\REFIEBAR.DLL
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - F:\Program Files\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - F:\Program Files\Messenger\msmsgs.exe
O16 - DPF: {4871A87A-BFDD-4106-8153-FFDE2BAC2967} (DLM Control) - http://dlm.tools.akamai.com/dlmanager/versions/activex/dlm-activex-2.2.4.1.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{56AD6E27-CD45-4AA2-BEAC-8FA9F3AAE108}: NameServer = 61.1.96.69,61.1.96.71
O18 - Protocol: linkscanner - {F274614C-63F8-47D5-A4D1-FBDDE494F8D1} - F:\Program Files\AVG\AVG8\avgpp.dll
O18 - Protocol: sspng - {1E8068DE-05AD-11D4-ACC8-EF447469245E} - F:\Program Files\Internet Researcher\sspng.dll
O20 - AppInit_DLLs: avgrsstx.dll acaptuser32.dll
O23 - Service: AVG8 E-mail Scanner (avg8emc) - AVG Technologies CZ, s.r.o. - F:\PROGRA~1\AVG\AVG8\avgemc.exe
O23 - Service: AVG8 WatchDog (avg8wd) - AVG Technologies CZ, s.r.o. - F:\PROGRA~1\AVG\AVG8\avgwdsvc.exe
O23 - Service: ##Id_String1.6844F930_1628_4223_B5CC_5BB94B879762## (Bonjour Service) - Apple Computer, Inc. - F:\Program Files\Bonjour\mDNSResponder.exe
O23 - Service: FLEXnet Licensing Service - Macrovision Europe Ltd. - F:\Program Files\Common Files\Macrovision Shared\FLEXnet Publisher\FNPLicensingService.exe
O23 - Service: NMIndexingService - Nero AG - F:\Program Files\Common Files\Ahead\Lib\NMIndexingService.exe
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - F:\WINDOWS\system32\nvsvc32.exe
O23 - Service: ServiceLayer - Nokia. - F:\Program Files\PC Connectivity Solution\ServiceLayer.exe
O23 - Service: TrueVector Internet Monitor (vsmon) - Zone Labs, LLC - F:\WINDOWS\system32\ZoneLabs\vsmon.exe

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End of file - 7459 bytes

 

Thanks Steve for reply. I got the BSOD with following error:
STOP c0000021a Windows subsystem system process terminated with a status of 0xc0000005(0x7c911f52 0x006cee4c)
I searched google for this problem and found that system services "csrss.exe" or "winlogon.exe" might be facing problems and closing abnormally, causing this problem. I tried to generate the debugging information of crash with drwtsn32.exe but there were no dump files in specified folder after 2 subsequent crashes.. the BSOD also didn't appear during these crashes.
Then I started uninstalling newly installed/updated programs and the problem was resolved after uninstalling Zone Alarm.
I then searched for any Zone Alarm update. There was one and now my system is working fine with all the programs along with updated Zone Alarm.
Thanks for your suggestion Steve, but one thing I still did not understand that Why BSOD was not appearing after each crash after turning off the automatic windows restart.... I got it only once..