Pc winlogon.exe virus or not ?

Bonjour,
J'ai un soucis avec mon PC, genre, j'ai un bon ralentissement au démarrage...
La date change toute seule ce qui périme mon anti virus (genre de 2009 à 2088...)
J'ai regardé sur Google sans succès...
Je suspecte la ligne O4 - HKLM\..\Run: [AutoUpdate_1] C:\Windows\winlogon.exe d'après d'autres forums...
Mais winlogon.exe est un process qui me semble aussi très important, enfin SVP éclairez moi...

Merci d'avance de m'aider.

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 18:44:38, on 21/01/2009
Platform: Windows Vista SP1 (WinNT 6.00.1905)
MSIE: Internet Explorer v7.00 (7.00.6001.18000)
Boot mode: Normal

Running processes:
C:\Program Files (x86)\Hewlett-Packard\IAM\bin\asghost.exe
C:\Program Files (x86)\Adobe\Reader 9.0\Reader\reader_sl.exe
C:\Program Files (x86)\Hewlett-Packard\HP Wireless Assistant\HPWAMain.exe
C:\Program Files (x86)\Hewlett-Packard\HP wireless Assistant\WiFiMsg.EXE
C:\Program Files (x86)\Logitech\SetPoint\x86\SetPoint32.exe
C:\Program Files (x86)\Hewlett-Packard\Shared\HpqToaster.exe
C:\Program Files (x86)\Mozilla Firefox\firefox.exe
C:\Program Files (x86)\Trend Micro\HijackThis\HijackThis.exe

R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyServer = 172.16.0.10:3128
O1 - Hosts: ::1 localhost
O2 - BHO: Adobe PDF Link Helper - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Program Files (x86)\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O2 - BHO: e-Carte Bleue Browser Helper Object - {2E03C0FD-4C48-43A7-9A54-00240C70FF16} - C:\Windows\SysWow64\BhoECart.dll
O2 - BHO: Java(tm) Plug-In SSV Helper - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files (x86)\Java\jre6\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 (x86)\Common Files\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Program Files (x86)\Java\jre6\bin\jp2ssv.dll
O2 - BHO: Credential Manager for HP ProtectTools - {DF21F1DB-80C6-11D3-9483-B03D0EC10000} - C:\Program Files (x86)\Hewlett-Packard\IAM\Bin\ItIEAddIn.dll
O3 - Toolbar: BitDefender Toolbar - {381FFDE8-2394-4f90-B10D-FC6124A40F8C} - "C:\Program Files\BitDefender\BitDefender 2009\Antispam32\IEToolbar.dll" (file missing)
O4 - HKLM\..\Run: [CognizanceTS] rundll32.exe C:\PROGRA~2\HEWLET~1\IAM\Bin\ASTSVCC.dll,RegisterModule
O4 - HKLM\..\Run: [HPWWANGSAssistant] c:\SWSetup\HPQWWAN\HPWWanGSAssistant.exe /TrayMode
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [AutoUpdate_1] C:\Windows\winlogon.exe
O4 - HKLM\..\Run: [hpWirelessAssistant] C:\Program Files (x86)\Hewlett-Packard\HP Wireless Assistant\HPWAMain.exe
O4 - HKCU\..\Run: [ccleaner] "C:\Program Files (x86)\CCleaner\CCleaner.exe" /AUTO
O4 - HKUS\S-1-5-19\..\Run: [WindowsWelcomeCenter] rundll32.exe oobefldr.dll,ShowWelcomeCenter (User 'SERVICE LOCAL')
O4 - HKUS\S-1-5-20\..\Run: [WindowsWelcomeCenter] rundll32.exe oobefldr.dll,ShowWelcomeCenter (User 'SERVICE RÉSEAU')
O4 - Global Startup: Logitech SetPoint.lnk = ?
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~2\MICROS~1\OFFICE11\EXCEL.EXE/3000
O8 - Extra context menu item: Envoyer au périphérique &Bluetooth... - C:\Program Files\WIDCOMM\Bluetooth Software\btsendto_ie.htm
O8 - Extra context menu item: Envoyer l'&image au périphérique Bluetooth... - C:\Program Files\WIDCOMM\Bluetooth Software\btsendto_ie_ctx.htm
O9 - Extra button: Recherche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~2\MICROS~1\OFFICE11\REFIEBAR.DLL
O9 - Extra button: Envoyer à Bluetooth - {CCA281CA-C863-46ef-9331-5C8D4460577F} - C:\Program Files\WIDCOMM\Bluetooth Software\btsendto_ie.htm
O9 - Extra 'Tools' menuitem: Envoyer au périphérique &Bluetooth... - {CCA281CA-C863-46ef-9331-5C8D4460577F} - C:\Program Files\WIDCOMM\Bluetooth Software\btsendto_ie.htm
O13 - Gopher Prefix:
O20 - AppInit_DLLs: APSHook.dll
O20 - Winlogon Notify: DeviceNP - C:\Windows\SYSTEM32\DeviceNP.dll
O23 - Service: Adobe LM Service - Unknown owner - C:\Program Files (x86)\Common Files\Adobe Systems Shared\Service\Adobelmsvc.exe
O23 - Service: Andrea ADI Filters Service (AEADIFilters) - Unknown owner - C:\Windows\system32\AEADISRV.EXE (file missing)
O23 - Service: @%SystemRoot%\system32\Alg.exe,-112 (ALG) - Unknown owner - C:\Windows\System32\alg.exe (file missing)
O23 - Service: BitDefender Arrakis Server (Arrakis3) - BitDefender S.R.L. https://www.bitdefender.fr/ - C:\Program Files\Common Files\BitDefender\BitDefender Arrakis Server\bin\Arrakis3.exe
O23 - Service: Com4Qlb - Hewlett-Packard Development Company, L.P. - C:\Program Files (x86)\Hewlett-Packard\HP Quick Launch Buttons\Com4Qlb.exe
O23 - Service: Verrouillage des périphériques / Audition HP ProtectTools (FLCDLOCK) - Hewlett-Packard Ltd - C:\Windows\SysWOW64\flcdlock.exe
O23 - Service: Drive Encryption Service (HpFkCryptService) - SafeBoot International - c:\Program Files (x86)\Hewlett-Packard\Drive Encryption\HpFkCrypt.exe
O23 - Service: hpqwmiex - Hewlett-Packard Development Company, L.P. - C:\Program Files (x86)\Hewlett-Packard\Shared\hpqwmiex.exe
O23 - Service: HP Service (hpsrv) - Unknown owner - C:\Windows\system32\Hpservice.exe (file missing)
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files (x86)\Common Files\InstallShield\Driver\1050\Intel 32\IDriverT.exe
O23 - Service: @keyiso.dll,-100 (KeyIso) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: Logitech Bluetooth Service (LBTServ) - Logitech, Inc. - C:\Program Files\Common Files\Logishrd\Bluetooth\LBTServ.exe
O23 - Service: LightScribeService Direct Disc Labeling Service (LightScribeService) - Hewlett-Packard Company - C:\Program Files (x86)\Common Files\LightScribe\LSSrvc.exe
O23 - Service: BitDefender Desktop Update Service (LIVESRV) - BitDefender SRL - C:\Program Files\Common Files\BitDefender\BitDefender Update Service\livesrv.exe
O23 - Service: @comres.dll,-2797 (MSDTC) - Unknown owner - C:\Windows\System32\msdtc.exe (file missing)
O23 - Service: @%SystemRoot%\System32\netlogon.dll,-102 (Netlogon) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: NVIDIA Performance Driver Service - Unknown owner - C:\Program Files\NVIDIA Corporation\Performance Drivers\nvPDsvc.exe
O23 - Service: NVIDIA Display Driver Service (nvsvc) - Unknown owner - C:\Windows\system32\nvvsvc.exe (file missing)
O23 - Service: PDF Document Manager (pdfcDispatcher) - PDF Complete Inc - C:\Program Files (x86)\PDF Complete\pdfsvc.exe
O23 - Service: @%systemroot%\system32\psbase.dll,-300 (ProtectedStorage) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: @%systemroot%\system32\Locator.exe,-2 (RpcLocator) - Unknown owner - C:\Windows\system32\locator.exe (file missing)
O23 - Service: @%SystemRoot%\system32\samsrv.dll,-1 (SamSs) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: @%SystemRoot%\system32\SLsvc.exe,-101 (slsvc) - Unknown owner - C:\Windows\system32\SLsvc.exe (file missing)
O23 - Service: @%SystemRoot%\system32\snmptrap.exe,-3 (SNMPTRAP) - Unknown owner - C:\Windows\System32\snmptrap.exe (file missing)
O23 - Service: @%systemroot%\system32\spoolsv.exe,-1 (Spooler) - Unknown owner - C:\Windows\System32\spoolsv.exe (file missing)
O23 - Service: stllssvr - MicroVision Development, Inc. - c:\Program Files (x86)\Common Files\SureThing Shared\stllssvr.exe
O23 - Service: SWIHPWMI - Sierra Wireless Inc. - C:\Program Files (x86)\HPQ\Shared\Sierra Wireless\Win32\Unicode\SWIHPWMI.exe
O23 - Service: @%SystemRoot%\system32\ui0detect.exe,-101 (UI0Detect) - Unknown owner - C:\Windows\system32\UI0Detect.exe (file missing)
O23 - Service: @%SystemRoot%\system32\vds.exe,-100 (vds) - Unknown owner - C:\Windows\System32\vds.exe (file missing)
O23 - Service: @%systemroot%\system32\vssvc.exe,-102 (VSS) - Unknown owner - C:\Windows\system32\vssvc.exe (file missing)
O23 - Service: BitDefender Virus Shield (VSSERV) - BitDefender S. R. L. - C:\Program Files\BitDefender\BitDefender 2009\vsserv.exe
O23 - Service: @%systemroot%\system32\wbengine.exe,-104 (wbengine) - Unknown owner - C:\Windows\system32\wbengine.exe (file missing)
O23 - Service: @%Systemroot%\system32\wbem\wmiapsrv.exe,-110 (wmiApSrv) - Unknown owner - C:\Windows\system32\wbem\WmiApSrv.exe (file missing)
O23 - Service: @%ProgramFiles%\Windows Media Player\wmpnetwk.exe,-101 (WMPNetworkSvc) - Unknown owner - C:\Program Files (x86)\Windows Media Player\wmpnetwk.exe (file missing)
O23 - Service: XAudioService - Unknown owner - C:\Windows\system32\DRIVERS\xaudio64.exe (file missing)