Ralentissement et virus, un ptit coup de main

Bonjour,

depusi quelques jour je rencontre des soucis sur mon PC avec des fort ralentissement.
après un passage à l'antivirus (avast et spy-bot, je n'ai rien trouvé...)
cependant j'ai quelque fois des alertes virus qui apparaissent à l'ecran. je fais supprimé mais je pense que je suis verolé.

je joint un rapport Hijackthis si celà peux servir.

Merci d'avance.

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 18:28:08, on 09/04/2009
Platform: Windows XP SP3 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.6000.16791)
Boot mode: Normal

Running processes:
D:\WINDOWS\System32\smss.exe
D:\WINDOWS\system32\winlogon.exe
D:\WINDOWS\system32\services.exe
D:\WINDOWS\system32\lsass.exe
D:\WINDOWS\system32\svchost.exe
D:\WINDOWS\System32\svchost.exe
D:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
D:\Program Files\Alwil Software\Avast4\ashServ.exe
D:\WINDOWS\system32\spoolsv.exe
D:\Program Files\Fichiers communs\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
D:\Program Files\Bonjour\mDNSResponder.exe
D:\Program Files\Java\jre6\bin\jqs.exe
D:\Program Files\Google\Update\GoogleUpdate.exe
D:\Program Files\Fichiers communs\LogiShrd\LVCOMSER\LVComSer.exe
D:\Program Files\Fichiers communs\LogiShrd\LVMVFM\LVPrcSrv.exe
D:\Program Files\Fichiers communs\Nero\Nero BackItUp 4\NBService.exe
D:\WINDOWS\system32\nvsvc32.exe
D:\Program Files\Sunbelt Software\Personal Firewall\SbPFLnch.exe
D:\Program Files\Sunbelt Software\Personal Firewall\SbPFSvc.exe
D:\Program Files\Alcohol Soft\Alcohol 120\StarWind\StarWindServiceAE.exe
D:\WINDOWS\system32\svchost.exe
D:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
D:\Program Files\Alwil Software\Avast4\ashWebSv.exe
D:\WINDOWS\Explorer.EXE
D:\Program Files\Fichiers communs\LogiShrd\LVCOMSER\LVComSer.exe
D:\Program Files\Sunbelt Software\Personal Firewall\SbPFCl.exe
D:\WINDOWS\SOUNDMAN.EXE
D:\Program Files\VDOTool\TBPanel.exe
D:\WINDOWS\system32\RUNDLL32.EXE
D:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
D:\Program Files\HP\HP Software Update\HPWuSchd2.exe
D:\Program Files\iTunes\iTunesHelper.exe
D:\Program Files\Fichiers communs\LogiShrd\LComMgr\Communications_Helper.exe
D:\Program Files\Logitech\QuickCam\Quickcam.exe
D:\Program Files\Java\jre6\bin\jusched.exe
D:\Program Files\Fichiers communs\Logishrd\LQCVFX\COCIManager.exe
D:\Program Files\iPod\bin\iPodService.exe
D:\WINDOWS\system32\ctfmon.exe
D:\Program Files\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe
D:\Program Files\Messenger\msmsgs.exe
D:\Program Files\Spybot - Search & Destroy\TeaTimer.exe
D:\Program Files\TomTom HOME 2\HOMERunner.exe
D:\Program Files\HP\Digital Imaging\bin\hpqimzone.exe
D:\Program Files\HP\Digital Imaging\bin\hpqtra08.exe
D:\Program Files\Logitech\SetPoint\SetPoint.exe
D:\Program Files\SolidWorks\swScheduler\swBOEngine.exe
D:\Program Files\Fichiers communs\Logitech\KhalShared\KHALMNPR.EXE
D:\Program Files\HP\Digital Imaging\bin\hpqSTE08.exe
D:\Program Files\Mozilla Firefox\firefox.exe
D:\Program Files\Java\jre6\bin\jucheck.exe
D:\Documents and Settings\Maison\Bureau\HiJackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = about:blank
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = https://www.msn.com/fr-fr/?ocid=iehp
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = https://www.bing.com/?toHttps=1&redig=5FC791212101479BAFBE1A679848B1AF
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = https://www.bing.com/?toHttps=1&redig=5FC791212101479BAFBE1A679848B1AF
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.msn.com/fr-fr
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page =
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = *.local
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
F3 - REG:win.ini: load=D:\DOCUME~1\Maison\APPLIC~1\comrepl.exe
O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - D:\Program Files\Fichiers communs\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O2 - BHO: Spybot-S&D IE Protection - {53707962-6F74-2D53-2644-206D7942484F} - D:\PROGRA~1\SPYBOT~1\SDHelper.dll
O2 - BHO: Java(tm) Plug-In SSV Helper - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - D:\Program Files\Java\jre6\bin\ssv.dll
O2 - BHO: (no name) - {7E853D72-626A-48EC-A868-BA8D5E23E045} - (no file)
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - d:\program files\google\googletoolbar1.dll
O2 - BHO: Google Toolbar Notifier BHO - {AF69DE43-7D58-4638-B6FA-CE66B5AD205D} - D:\Program Files\Google\GoogleToolbarNotifier\5.1.1309.3572\swg.dll
O2 - BHO: PDFCreator Toolbar Helper - {C451C08A-EC37-45DF-AAAD-18B51AB5E837} - D:\Program Files\PDFCreator Toolbar\v3.3.0.1\PDFCreator_Toolbar.dll
O2 - BHO: Google Dictionary Compression sdch - {C84D72FE-E17D-4195-BB24-76C02E2E7C4E} - D:\Program Files\Google\Google Toolbar\Component\fastsearch_219B3E1547538286.dll
O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - D:\Program Files\Java\jre6\bin\jp2ssv.dll
O2 - BHO: JQSIEStartDetectorImpl - {E7E6F031-17CE-4C07-BC86-EABFE594F69C} - D:\Program Files\Java\jre6\lib\deploy\jqs\ie\jqs_plugin.dll
O3 - Toolbar: PDFCreator Toolbar - {31CF9EBE-5755-4A1D-AC25-2834D952D9B4} - D:\Program Files\PDFCreator Toolbar\v3.3.0.1\PDFCreator_Toolbar.dll
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - d:\program files\google\googletoolbar1.dll
O4 - HKLM\..\Run: [SoundMan] SOUNDMAN.EXE
O4 - HKLM\..\Run: [Gainward] D:\Program Files\VDOTool\TBPanel.exe /A
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE D:\WINDOWS\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [NvMediaCenter] RUNDLL32.EXE D:\WINDOWS\system32\NvMcTray.dll,NvTaskbarInit
O4 - HKLM\..\Run: [avast!] D:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [HP Software Update] D:\Program Files\HP\HP Software Update\HPWuSchd2.exe
O4 - HKLM\..\Run: [iTunesHelper] "D:\Program Files\iTunes\iTunesHelper.exe"
O4 - HKLM\..\Run: [LogitechCommunicationsManager] "D:\Program Files\Fichiers communs\LogiShrd\LComMgr\Communications_Helper.exe"
O4 - HKLM\..\Run: [LogitechQuickCamRibbon] "D:\Program Files\Logitech\QuickCam\Quickcam.exe" /hide
O4 - HKLM\..\Run: [SunJavaUpdateSched] "D:\Program Files\Java\jre6\bin\jusched.exe"
O4 - HKLM\..\Run: [QuickTime Task] "D:\Program Files\QuickTime\QTTask.exe" -atboottime
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "D:\Program Files\Adobe\Reader 9.0\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [Kernel and Hardware Abstraction Layer] KHALMNPR.EXE
O4 - HKCU\..\Run: [CTFMON.EXE] D:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [swg] D:\Program Files\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe
O4 - HKCU\..\Run: [AlcoholAutomount] "D:\Program Files\Alcohol Soft\Alcohol 120\axcmd.exe" /automount
O4 - HKCU\..\Run: [lrwdr] "d:\documents and settings\maison\local settings\application data\lrwdr.exe" lrwdr
O4 - HKCU\..\Run: [MSMSGS] "D:\Program Files\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [SpybotSD TeaTimer] D:\Program Files\Spybot - Search & Destroy\TeaTimer.exe
O4 - HKCU\..\Run: [TomTomHOME.exe] "D:\Program Files\TomTom HOME 2\HOMERunner.exe"
O4 - HKLM\..\Policies\Explorer\Run: [ComRepl] D:\DOCUME~1\Maison\APPLIC~1\MICROS~1\comrepl.exe /waitservice
O4 - HKCU\..\Policies\Explorer\Run: [SessMgr] D:\DOCUME~1\Maison\LOCALS~1\Temp\sessmgr.exe /waitservice
O4 - HKUS\S-1-5-19\..\Run: [CTFMON.EXE] D:\WINDOWS\system32\CTFMON.EXE (User 'SERVICE LOCAL')
O4 - HKUS\S-1-5-20\..\Run: [CTFMON.EXE] D:\WINDOWS\system32\CTFMON.EXE (User 'SERVICE RÉSEAU')
O4 - HKUS\S-1-5-18\..\Run: [CTFMON.EXE] D:\WINDOWS\system32\CTFMON.EXE (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [CTFMON.EXE] D:\WINDOWS\system32\CTFMON.EXE (User 'Default user')
O4 - Startup: Moteur du Planificateur de tâches SolidWorks.lnk = D:\Program Files\SolidWorks\swScheduler\swBOEngine.exe
O4 - Global Startup: Démarrage rapide de HP Photosmart Premier.lnk = D:\Program Files\HP\Digital Imaging\bin\hpqthb08.exe
O4 - Global Startup: HP Digital Imaging Monitor.lnk = D:\Program Files\HP\Digital Imaging\bin\hpqtra08.exe
O4 - Global Startup: Logitech SetPoint.lnk = D:\Program Files\Logitech\SetPoint\SetPoint.exe
O8 - Extra context menu item: &Traduire à partir de l'anglais - res://D:\Program Files\Google\GoogleToolbar1.dll/cmwordtrans.html
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://D:\PROGRA~1\MICROS~2\Office12\EXCEL.EXE/3000
O8 - Extra context menu item: Pages liées - res://D:\Program Files\Google\GoogleToolbar1.dll/cmbacklinks.html
O8 - Extra context menu item: Pages similaires - res://D:\Program Files\Google\GoogleToolbar1.dll/cmsimilar.html
O8 - Extra context menu item: Recherche &Google - res://D:\Program Files\Google\GoogleToolbar1.dll/cmsearch.html
O8 - Extra context menu item: Version de la page actuelle disponible dans le cache Google - res://D:\Program Files\Google\GoogleToolbar1.dll/cmcache.html
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - D:\PROGRA~1\MICROS~2\Office12\REFIEBAR.DLL
O9 - Extra button: (no name) - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - D:\PROGRA~1\SPYBOT~1\SDHelper.dll
O9 - Extra 'Tools' menuitem: Spybot - Search & Destroy Configuration - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - D:\PROGRA~1\SPYBOT~1\SDHelper.dll
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - D:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - D:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - D:\Program Files\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - D:\Program Files\Messenger\msmsgs.exe
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://www.update.microsoft.com/...
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://fpdownload2.macromedia.com/get/shockwave/cabs/flash/swflash.cab
O23 - Service: Apple Mobile Device - Apple Inc. - D:\Program Files\Fichiers communs\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - ALWIL Software - D:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: avast! Antivirus - ALWIL Software - D:\Program Files\Alwil Software\Avast4\ashServ.exe
O23 - Service: avast! Mail Scanner - ALWIL Software - D:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
O23 - Service: avast! Web Scanner - ALWIL Software - D:\Program Files\Alwil Software\Avast4\ashWebSv.exe
O23 - Service: Service Bonjour (Bonjour Service) - Apple Inc. - D:\Program Files\Bonjour\mDNSResponder.exe
O23 - Service: Service Google Update (gupdate1c98ec3ad0369be) (gupdate1c98ec3ad0369be) - Google Inc. - D:\Program Files\Google\Update\GoogleUpdate.exe
O23 - Service: Google Software Updater (gusvc) - Google - D:\Program Files\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: Service de l’iPod (iPod Service) - Apple Inc. - D:\Program Files\iPod\bin\iPodService.exe
O23 - Service: Java Quick Starter (JavaQuickStarterService) - Sun Microsystems, Inc. - D:\Program Files\Java\jre6\bin\jqs.exe
O23 - Service: LVCOMSer - Logitech Inc. - D:\Program Files\Fichiers communs\LogiShrd\LVCOMSER\LVComSer.exe
O23 - Service: Process Monitor (LVPrcSrv) - Logitech Inc. - D:\Program Files\Fichiers communs\LogiShrd\LVMVFM\LVPrcSrv.exe
O23 - Service: Nero BackItUp Scheduler 4.0 - Nero AG - D:\Program Files\Fichiers communs\Nero\Nero BackItUp 4\NBService.exe
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - D:\WINDOWS\system32\nvsvc32.exe
O23 - Service: Pml Driver HPZ12 - HP - D:\WINDOWS\system32\HPZipm12.exe
O23 - Service: SbPF.Launcher - Sunbelt Software, Inc. - D:\Program Files\Sunbelt Software\Personal Firewall\SbPFLnch.exe
O23 - Service: SolidWorks Licensing Service - SolidWorks - D:\Program Files\Fichiers communs\SolidWorks Shared\Service\SolidWorksLicensing.exe
O23 - Service: Sunbelt Personal Firewall 4 (SPF4) - Sunbelt Software, Inc. - D:\Program Files\Sunbelt Software\Personal Firewall\SbPFSvc.exe
O23 - Service: StarWind AE Service (StarWindServiceAE) - Rocket Division Software - D:\Program Files\Alcohol Soft\Alcohol 120\StarWind\StarWindServiceAE.exe