Fermeture intempestive de l'explorer sous XP

Bonjour,
Depuis quelques temps je subis des fermetures intempestives de l'explorer sous XP.
Ci-après le log de HijackThis.
Merci d'avance des propositions que vous pourrez faire pour m'aider.

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 11:48:03, on 12/12/2007
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.6000.16544)
Boot mode: Normal

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\Program Files\Windows Defender\MsMpEng.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Lavasoft\Ad-Aware 2007\aawservice.exe
C:\WINDOWS\system32\brsvc01a.exe
C:\WINDOWS\system32\brss01a.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Fichiers communs\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
C:\Program Files\Fichiers communs\Autodesk Shared\Service\AdskScSrv.exe
C:\Program Files\Bonjour\mDNSResponder.exe
C:\Program Files\Executive Software\Diskeeper\DkService.exe
C:\Program Files\Autodesk\3ds Max 9\mentalray\satellite\raysat_3dsmax9_32server.exe
C:\Program Files\NetLimiter 2 Pro\nlsvc.exe
C:\Program Files\CyberLink\Shared files\RichVideo.exe
C:\Program Files\Autodesk\3ds Max 9\plugins\Brazil\sfmgr\sfmgr.exe
C:\WINDOWS\system32\CNAC1RPK.EXE
C:\WINDOWS\system32\spoo1sv.exe
C:\Program Files\NetLimiter 2 Pro\NLClient.exe
C:\WINDOWS\VM_STI.EXE
C:\Program Files\Logitech\Gaming Software\LWEMon.exe
C:\Program Files\Lavasoft\Ad-Aware 2007\AAWTray.exe
C:\WINDOWS\SOUNDMAN.EXE
C:\Windows\System32\VisualTaskTips.exe
C:\Program Files\styler\Styler.exe
C:\Program Files\Windows Sidebar\sidebar.exe
C:\Program Files\Windows Defender\MSASCui.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\Microsoft ActiveSync\wcescomm.exe
C:\PROGRA~1\MICROS~4\rapimgr.exe
C:\Program Files\Giganews Accelerator\GiganewsAccelerator.exe
C:\Program Files\Windows Sidebar\sidebar.exe
C:\PROGRA~1\Mozilla Firefox\firefox.exe
C:\Program Files\Windows Live\Messenger\msnmsgr.exe
C:\Program Files\Windows Live\Messenger\usnsvc.exe
C:\Program Files\GrabIt\GrabIt.exe
C:\WINDOWS\explorer.exe
C:\Program Files\Windows Media Player\wmplayer.exe
C:\Documents and Settings\Olivier\Bureau\Download\HiJackThis\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://www.google.fr/keyword/%s
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://www.google.fr/toolbar/ie8/sidebar.html
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = https://www.google.fr/?gws_rd=ssl
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.google.fr/?gws_rd=ssl
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = https://www.google.fr/?gws_rd=ssl
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = https://www.google.fr/?gws_rd=ssl
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = https://www.google.fr/?gws_rd=ssl
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.google.fr/?gws_rd=ssl
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant = http://www.google.fr/toolbar/ie8/sidebar.html
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = http://www.google.fr/keyword/%s
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Window Title = Windows Ultimate Edition
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = *.local
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: Aide pour le lien d'Adobe PDF Reader - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Fichiers communs\Adobe\Acrobat\ActiveX\AcroIEHelper.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.6.0_03\bin\ssv.dll
O2 - BHO: (no name) - {7E853D72-626A-48EC-A868-BA8D5E23E045} - (no file)
O2 - BHO: Programme d'aide de l'Assistant de connexion Windows Live - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files\Fichiers communs\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: Century Class - {B9893324-6B8F-4C54-98A8-D22194403550} - C:\WINDOWS\system32\SoTools.dll
O3 - Toolbar: StylerToolBar - {D2F8F919-690B-4EA2-9FA7-A203D1E04F75} - C:\Program Files\styler\TB\StylerTB.dll
O4 - HKLM\..\Run: [Vistadrv] C:\WINDOWS\system32\Vistadrive\vsdrv.exe
O4 - HKLM\..\Run: [DiskeeperSystray] "C:\Program Files\Executive Software\Diskeeper\DkIcon.exe"
O4 - HKLM\..\Run: [AtiPTA] atiptaxx.exe
O4 - HKLM\..\Run: [BigDogPath] C:\WINDOWS\VM_STI.EXE USB PC Camera 301P
O4 - HKLM\..\Run: [Start WingMan Profiler] C:\Program Files\Logitech\Gaming Software\LWEMon.exe /noui
O4 - HKLM\..\Run: [AAWTray] C:\Program Files\Lavasoft\Ad-Aware 2007\AAWTray.exe
O4 - HKLM\..\Run: [SoundMan] SOUNDMAN.EXE
O4 - HKLM\..\Run: [VisualTaskTips] C:\Windows\System32\VisualTaskTips.exe
O4 - HKLM\..\Run: [TransBar] C:\Windows\System32\TransBar.exe /s
O4 - HKLM\..\Run: [Styler] C:\Program Files\styler\Styler.exe
O4 - HKLM\..\Run: [Sidebar] C:\Program Files\Windows Sidebar\sidebar.exe /autoRun
O4 - HKLM\..\Run: [Windows Defender] "C:\Program Files\Windows Defender\MSASCui.exe" -hide
O4 - HKLM\..\RunOnce: [WIAWizardMenu] RUNDLL32.EXE C:\WINDOWS\system32\sti_ci.dll,WiaCreateWizardMenu
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [H/PC Connection Agent] "C:\Program Files\Microsoft ActiveSync\wcescomm.exe"
O4 - HKUS\S-1-5-19\..\Run: [UberIcon] "C:\Program Files\UberIcon\UberIcon Manager.exe" (User 'SERVICE LOCAL')
O4 - HKUS\S-1-5-19\..\Run: [VisualTaskTips] C:\Windows\System32\VisualTaskTips.exe (User 'SERVICE LOCAL')
O4 - HKUS\S-1-5-19\..\Run: [TweakRAM] C:\Program Files\TweakRAM\TweakRAM.exe (User 'SERVICE LOCAL')
O4 - HKUS\S-1-5-19\..\Run: [LClock] C:\Program Files\LClock\lclock.exe (User 'SERVICE LOCAL')
O4 - HKUS\S-1-5-19\..\RunOnce: [nltide3] cmd.exe /C rundll32 advpack.dll,LaunchINFSection nLite.inf,C (User 'SERVICE LOCAL')
O4 - HKUS\S-1-5-20\..\Run: [UberIcon] "C:\Program Files\UberIcon\UberIcon Manager.exe" (User 'SERVICE RÉSEAU')
O4 - HKUS\S-1-5-20\..\RunOnce: [nltide3] cmd.exe /C rundll32 advpack.dll,LaunchINFSection nLite.inf,C (User 'SERVICE RÉSEAU')
O4 - HKUS\S-1-5-18\..\Run: [UberIcon] "C:\Program Files\UberIcon\UberIcon Manager.exe" (User 'SYSTEM')
O4 - HKUS\S-1-5-18\..\RunOnce: [nltide3] cmd.exe /C rundll32 advpack.dll,LaunchINFSection nLite.inf,C (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [UberIcon] "C:\Program Files\UberIcon\UberIcon Manager.exe" (User 'Default user')
O4 - HKUS\.DEFAULT\..\RunOnce: [nltide3] cmd.exe /C rundll32 advpack.dll,LaunchINFSection nLite.inf,C (User 'Default user')
O4 - Global Startup: Giganews Accelerator.lnk = C:\Program Files\Giganews Accelerator\GiganewsAccelerator.exe
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\MICROS~1\Office12\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_03\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_03\bin\ssv.dll
O9 - Extra button: Create Mobile Favorite - {2EAF5BB1-070F-11D3-9307-00C04FAE2D4F} - C:\PROGRA~1\MICROS~4\INetRepl.dll
O9 - Extra button: (no name) - {2EAF5BB2-070F-11D3-9307-00C04FAE2D4F} - C:\PROGRA~1\MICROS~4\INetRepl.dll
O9 - Extra 'Tools' menuitem: Créer un Favori de l'appareil mobile... - {2EAF5BB2-070F-11D3-9307-00C04FAE2D4F} - C:\PROGRA~1\MICROS~4\INetRepl.dll
O9 - Extra button: Titan Poker - {49783ED4-258D-4f9f-BE11-137C18D3E543} - C:\Poker\Titan Poker\casino.exe
O9 - Extra 'Tools' menuitem: Titan Poker - {49783ED4-258D-4f9f-BE11-137C18D3E543} - C:\Poker\Titan Poker\casino.exe
O9 - Extra button: (no name) - {85d1f590-48f4-11d9-9669-0800200c9a66} - C:\WINDOWS\bdoscandel.exe
O9 - Extra 'Tools' menuitem: Uninstall BitDefender Online Scanner v8 - {85d1f590-48f4-11d9-9669-0800200c9a66} - C:\WINDOWS\bdoscandel.exe
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~1\Office12\REFIEBAR.DLL
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O16 - DPF: {02BF25D5-8C17-4B23-BC80-D3488ABDDC6B} (QuickTime Object) - http://a1540.g.akamai.net/7/1540/52/20061205/qtinstall.info.apple.com/qtactivex/qtplugin.cab
O16 - DPF: {5D86DDB5-BDF9-441B-9E9E-D4730F4EE499} (BDSCANONLINE Control) - http://www.bitdefender.fr/scan_fr/scan8/oscan8.cab
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://www.update.microsoft.com/...
O16 - DPF: {9A9307A0-7DA4-4DAF-B042-5009F29E09E1} (ActiveScan Installer Class) - http://acs.pandasoftware.com/activescan/as5free/asinst.cab
O16 - DPF: {C4925E65-7A1E-11D2-8BB4-00A0C9CC72C3} (Virtools WebPlayer Class) - https://www.3ds.com/products-services/3dvia/
O16 - DPF: {CAFEEFAC-0014-0001-0001-ABCDEFFEDCBA} (Environnement d'exécution Java 1.4.1_01) -
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://fpdownload2.macromedia.com/get/shockwave/cabs/flash/swflash.cab
O23 - Service: Ad-Aware 2007 Service (aawservice) - Lavasoft AB - C:\Program Files\Lavasoft\Ad-Aware 2007\aawservice.exe
O23 - Service: Adobe LM Service - Adobe Systems - C:\Program Files\Fichiers communs\Adobe Systems Shared\Service\Adobelmsvc.exe
O23 - Service: Apple Mobile Device - Apple, Inc. - C:\Program Files\Fichiers communs\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
O23 - Service: ATI Smart - Unknown owner - C:\WINDOWS\system32\ati2sgag.exe
O23 - Service: Autodesk Licensing Service - Autodesk - C:\Program Files\Fichiers communs\Autodesk Shared\Service\AdskScSrv.exe
O23 - Service: ##Id_String1.6844F930_1628_4223_B5CC_5BB94B879762## (Bonjour Service) - Apple Computer, Inc. - C:\Program Files\Bonjour\mDNSResponder.exe
O23 - Service: BrSplService (Brother XP spl Service) - brother Industries Ltd - C:\WINDOWS\system32\brsvc01a.exe
O23 - Service: Diskeeper - Executive Software International, Inc. - C:\Program Files\Executive Software\Diskeeper\DkService.exe
O23 - Service: FLEXnet Licensing Service - Macrovision Europe Ltd. - C:\Program Files\Fichiers communs\Macrovision Shared\FLEXnet Publisher\FNPLicensingService.exe
O23 - Service: Google Updater Service (gusvc) - Google - C:\Program Files\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Fichiers communs\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: Service de l'iPod (iPod Service) - Apple Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: mental ray 3.5 Satellite (32-bit) (mi-raysat_3dsmax9_32) - Unknown owner - C:\Program Files\Autodesk\3ds Max 9\mentalray\satellite\raysat_3dsmax9_32server.exe
O23 - Service: MSCSPTISRV - Sony Corporation - C:\Program Files\Fichiers communs\Sony Shared\AVLib\MSCSPTISRV.exe
O23 - Service: NetLimiter (nlsvc) - Locktime Software - C:\Program Files\NetLimiter 2 Pro\nlsvc.exe
O23 - Service: PACSPTISVR - Unknown owner - C:\Program Files\Fichiers communs\Sony Shared\AVLib\PACSPTISVR.exe
O23 - Service: Cyberlink RichVideo Service(CRVS) (RichVideo) - Unknown owner - C:\Program Files\CyberLink\Shared files\RichVideo.exe
O23 - Service: CaReTaKeR-CT NetMgr 1.2.1 (sfmgr) - Unknown owner - C:\Program Files\Autodesk\3ds Max 9\plugins\Brazil\sfmgr\sfmgr.exe
O23 - Service: SonicStage Back-End Service - Sony Corporation - C:\Program Files\Fichiers communs\Sony Shared\AVLib\SsBeSvc.exe
O23 - Service: Windows Management PrintSystem (spoo1sv) - Unknown owner - C:\WINDOWS\SYSTEM32\spoo1sv.exe
O23 - Service: Sony SPTI Service (SPTISRV) - Sony Corporation - C:\Program Files\Fichiers communs\Sony Shared\AVLib\SPTISRV.exe
O23 - Service: SonicStage SCSI Service (SSScsiSV) - Sony Corporation - C:\Program Files\Fichiers communs\Sony Shared\AVLib\SSScsiSV.exe