Connexion PC et Internet lente - Virus?

Bonjour,

Bonjour, et merci d'avance pour tous ceux qui pourront m' aider sur ce site très utile. Voici mon problème : depuis hier connexion internet et PC très lente.

alors j'ai fais un scan "hijackthis" et voila le résultat

Logfile of Trend Micro HijackThis v2.0.4
Scan saved at 09:01:50, on 16/01/2012
Platform: Windows XP SP3 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.6000.17106)
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:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Avira\AntiVir Desktop\sched.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Avira\AntiVir Desktop\avguard.exe
C:\Program Files\Fichiers communs\Apple\Mobile Device Support\AppleMobileDeviceService.exe
C:\Program Files\Bonjour\mDNSResponder.exe
C:\Program Files\Avira\AntiVir Desktop\avshadow.exe
C:\Program Files\Canon\IJPLM\IJPLMSVC.EXE
C:\Program Files\Java\jre6\bin\jqs.exe
C:\Program Files\Fichiers communs\Microsoft Shared\VS7DEBUG\MDM.EXE
C:\Program Files\Trend Micro\OfficeScan Client\ntrtscan.exe
C:\WINDOWS\system32\ofps.exe
C:\Program Files\Polar\Daemon\polard.exe
C:\Program Files\Movistar\ConxWireless\Common\RaRegistry.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Trend Micro\OfficeScan Client\tmlisten.exe
C:\WINDOWS\TEMP\EBF6B4.EXE
C:\WINDOWS\System32\wbem\wmiapsrv.exe
C:\Program Files\Trend Micro\OfficeScan Client\CNTAoSMgr.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Trend Micro\OfficeScan Client\pccntmon.exe
C:\Program Files\ScanSoft\PaperPort\pptd40nt.exe
C:\WINDOWS\System32\hkcmd.exe
C:\WINDOWS\System32\igfxpers.exe
C:\Program Files\Analog Devices\Core\smax4pnp.exe
C:\WINDOWS\System32\igfxsrvc.exe
C:\Program Files\Avira\AntiVir Desktop\avgnt.exe
C:\Program Files\HP\HP Software Update\HPWuSchd2.exe
C:\Program Files\Sony\Content Transfer\ContentTransferWMDetector.exe
C:\Program Files\Canon\Solution Menu EX\CNSEMAIN.EXE
C:\Program Files\Fichiers communs\Java\Java Update\jusched.exe
C:\Program Files\iTunes\iTunesHelper.exe
C:\Program Files\Spybot - Search & Destroy\TeaTimer.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Documents and Settings\Administrateur.DOMADXPPRODSK01\Local Settings\Application Data\Akamai\netsession_win.exe
C:\Program Files\Steam\Steam.exe
C:\Documents and Settings\Administrateur.DOMADXPPRODSK01\Local Settings\Application Data\Akamai\netsession_win.exe
C:\Program Files\Logitech\SetPoint\SetPoint.exe
C:\Program Files\Movistar\ConxWireless\Common\RaUI.exe
C:\Documents and Settings\Administrateur.DOMADXPPRODSK01\Application Data\Microsoft\Notification de cadeaux MSN\lsnfier.exe
C:\Program Files\iPod\bin\iPodService.exe
C:\Program Files\Fichiers communs\Logishrd\KHAL2\KHALMNPR.EXE
C:\Program Files\HP\Digital Imaging\bin\hpqgalry.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Program Files\Mozilla Firefox\plugin-container.exe
C:\Program Files\Trend Micro\HiJackThis\HiJackThis.exe

R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://go.microsoft.com/fwlink/?LinkId=54896
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://fr.msn.com/
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant = http://roonic.com/results.html?q=%s&sa=Search&cx=partner-pub-0345395751421741:y8d2vrh2u6t&cof=FORID:10&ie=UTF-8
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =
R1 - HKCU\Software\Microsoft\Internet Connection Wizard,ShellNext = http://go.microsoft.com/fwlink/?LinkId=69157
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = *.local
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Program Files\Fichiers communs\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O2 - BHO: Spybot-S&D IE Protection - {53707962-6F74-2D53-2644-206D7942484F} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O2 - BHO: (no name) - {5C255C8A-E604-49b4-9D64-90988571CECB} - (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: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Program Files\Java\jre6\bin\jp2ssv.dll
O2 - BHO: JQSIEStartDetectorImpl - {E7E6F031-17CE-4C07-BC86-EABFE594F69C} - C:\Program Files\Java\jre6\lib\deploy\jqs\ie\jqs_plugin.dll
O4 - HKLM\..\Run: [OfficeScanNT Monitor] "C:\Program Files\Trend Micro\OfficeScan Client\pccntmon.exe" -HideWindow
O4 - HKLM\..\Run: [Kernel and Hardware Abstraction Layer] KHALMNPR.EXE
O4 - HKLM\..\Run: [PaperPort PTD] C:\Program Files\ScanSoft\PaperPort\pptd40nt.exe
O4 - HKLM\..\Run: [IndexSearch] C:\Program Files\ScanSoft\PaperPort\IndexSearch.exe
O4 - HKLM\..\Run: [IgfxTray] C:\WINDOWS\System32\igfxtray.exe
O4 - HKLM\..\Run: [HotKeysCmds] C:\WINDOWS\System32\hkcmd.exe
O4 - HKLM\..\Run: [Persistence] C:\WINDOWS\System32\igfxpers.exe
O4 - HKLM\..\Run: [SoundMAXPnP] C:\Program Files\Analog Devices\Core\smax4pnp.exe
O4 - HKLM\..\Run: [zzzHPSETUP] D:\Setup.exe /RESTART
O4 - HKLM\..\Run: [avgnt] "C:\Program Files\Avira\AntiVir Desktop\avgnt.exe" /min
O4 - HKLM\..\Run: [HP Software Update] C:\Program Files\HP\HP Software Update\HPWuSchd2.exe
O4 - HKLM\..\Run: [ContentTransferWMDetector.exe] C:\Program Files\Sony\Content Transfer\ContentTransferWMDetector.exe
O4 - HKLM\..\Run: [CanonSolutionMenuEx] C:\Program Files\Canon\Solution Menu EX\CNSEMAIN.EXE /logon
O4 - HKLM\..\Run: [Adobe ARM] "C:\Program Files\Fichiers communs\Adobe\ARM\1.0\AdobeARM.exe"
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Fichiers communs\Java\Java Update\jusched.exe"
O4 - HKLM\..\Run: [APSDaemon] "C:\Program Files\Fichiers communs\Apple\Apple Application Support\APSDaemon.exe"
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [iTunesHelper] "C:\Program Files\iTunes\iTunesHelper.exe"
O4 - HKCU\..\Run: [SpybotSD TeaTimer] C:\Program Files\Spybot - Search & Destroy\TeaTimer.exe
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [Akamai NetSession Interface] "C:\Documents and Settings\Administrateur.DOMADXPPRODSK01\Local Settings\Application Data\Akamai\netsession_win.exe"
O4 - HKCU\..\Run: [Steam] "C:\Program Files\Steam\Steam.exe" -silent
O4 - Startup: Notification de cadeaux MSN.lnk = C:\Documents and Settings\Administrateur.DOMADXPPRODSK01\Application Data\Microsoft\Notification de cadeaux MSN\lsnfier.exe
O4 - Global Startup: Démarrage rapide du logiciel HP Image Zone.lnk = C:\Program Files\HP\Digital Imaging\bin\hpqthb08.exe
O4 - Global Startup: HP Digital Imaging Monitor.lnk = C:\Program Files\HP\Digital Imaging\bin\hpqtra08.exe
O4 - Global Startup: Logitech SetPoint.lnk = C:\Program Files\Logitech\SetPoint\SetPoint.exe
O4 - Global Startup: Utilidad del Adaptador USB Inalámbrico de Movistar.lnk = C:\Program Files\Movistar\ConxWireless\Common\RaUI.exe
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office12\EXCEL.EXE/3000
O9 - Extra button: Envoyer à OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\PROGRA~1\MICROS~2\Office12\ONBttnIE.dll
O9 - Extra 'Tools' menuitem: &Envoyer à OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\PROGRA~1\MICROS~2\Office12\ONBttnIE.dll
O9 - Extra button: Recherche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
O9 - Extra button: Vider les Certificats DGTPE - {B423407D-EC65-4022-9960-6B804C91202B} - C:\DGTPE\IEPurgeStore\IE-DGTPE-PurgeKillRestart.exe (file missing)
O9 - Extra button: (no name) - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O9 - Extra 'Tools' menuitem: Spybot - Search & Destroy Configuration - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - C:\PROGRA~1\SPYBOT~1\SDHelper.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: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://update.microsoft.com/windowsupdate/v6/V5Controls/en/x86/client/wuweb_site.cab?1251898909125
O16 - DPF: {6E32070A-766D-4EE6-879C-DC1FA91D2FC3} (MUWebControl Class) - http://www.update.microsoft.com/microsoftupdate/v6/V5Controls/en/x86/client/muweb_site.cab?1203518680848
O16 - DPF: {8C922C73-FFFA-45A3-B2C2-BC1E30074267} (WalkmanRegistrar Object) - http://www.sony.fr/bravia/RegistrationAgent.cab
O16 - DPF: {CAFEEFAC-0016-0000-0020-ABCDEFFEDCBA} (Java Plug-in 1.6.0_20) -
O16 - DPF: {E06E2E99-0AA1-11D4-ABA6-0060082AA75C} -
O17 - HKLM\System\CCS\Services\Tcpip\..\{F6BF382D-7CF4-480D-A88D-EB77EBEA3F4F}: NameServer = 80.58.61.250,80.58.61.254
O22 - SharedTaskScheduler: Pré-chargeur Browseui - {438755C2-A8BA-11D1-B96B-00A0C90312E1} - C:\WINDOWS\system32\browseui.dll
O22 - SharedTaskScheduler: Démon de cache des catégories de composant - {8C7461EF-2B13-11d2-BE35-3078302C2030} - C:\WINDOWS\system32\browseui.dll
O23 - Service: Avira AntiVir Planificateur (AntiVirSchedulerService) - Avira GmbH - C:\Program Files\Avira\AntiVir Desktop\sched.exe
O23 - Service: Avira AntiVir Guard (AntiVirService) - Avira GmbH - C:\Program Files\Avira\AntiVir Desktop\avguard.exe
O23 - Service: Apple Mobile Device - Apple Inc. - C:\Program Files\Fichiers communs\Apple\Mobile Device Support\AppleMobileDeviceService.exe
O23 - Service: Service Bonjour (Bonjour Service) - Apple Inc. - C:\Program Files\Bonjour\mDNSResponder.exe
O23 - Service: Service d'administration du Gestionnaire de disque logique (dmadmin) - Unknown owner - C:\WINDOWS\System32\dmadmin.exe
O23 - Service: Journal des événements (Eventlog) - Unknown owner - C:\WINDOWS\system32\services.exe
O23 - Service: Google Update Service (gupdate) (gupdate) - Unknown owner - C:\Program Files\Google\Update\GoogleUpdate.exe
O23 - Service: Service Google Update (gupdatem) (gupdatem) - Unknown owner - C:\Program Files\Google\Update\GoogleUpdate.exe
O23 - Service: Canon Inkjet Printer/Scanner/Fax Extended Survey Program (IJPLMSVC) - Unknown owner - C:\Program Files\Canon\IJPLM\IJPLMSVC.EXE
O23 - Service: Service COM de gravage de CD IMAPI (ImapiService) - Unknown owner - C:\WINDOWS\System32\imapi.exe
O23 - Service: Service de l'iPod (iPod Service) - Apple Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: Java Quick Starter (JavaQuickStarterService) - Sun Microsystems, Inc. - C:\Program Files\Java\jre6\bin\jqs.exe
O23 - Service: Logitech Bluetooth Service (LBTServ) - Logitech, Inc. - C:\Program Files\Fichiers communs\Logitech\Bluetooth\LBTServ.exe
O23 - Service: Partage de Bureau à distance NetMeeting (mnmsrvc) - Unknown owner - C:\WINDOWS\System32\mnmsrvc.exe
O23 - Service: Scan en temps réel d'OfficeScanNT (ntrtscan) - Trend Micro Inc. - C:\Program Files\Trend Micro\OfficeScan Client\ntrtscan.exe
O23 - Service: OmniForm Printer - Unknown owner - C:\WINDOWS\system32\ofps.exe
O23 - Service: Plug-and-Play (PlugPlay) - Unknown owner - C:\WINDOWS\system32\services.exe
O23 - Service: Polar Daemon - Unknown owner - C:\Program Files\Polar\Daemon\polard.exe
O23 - Service: Ralink Registry Writer (RalinkRegistryWriter) - Ralink Technology, Corp. - C:\Program Files\Movistar\ConxWireless\Common\RaRegistry.exe
O23 - Service: Gestionnaire de session d'aide sur le Bureau à distance (RDSessMgr) - Unknown owner - C:\WINDOWS\system32\sessmgr.exe
O23 - Service: Carte à puce (SCardSvr) - Unknown owner - C:\WINDOWS\System32\SCardSvr.exe
O23 - Service: Steam Client Service - Valve Corporation - C:\Program Files\Fichiers communs\Steam\SteamService.exe
O23 - Service: Journaux et alertes de performance (SysmonLog) - Unknown owner - C:\WINDOWS\system32\smlogsvc.exe
O23 - Service: Service d'écoute d'OfficeScan NT (tmlisten) - Trend Micro Inc. - C:\Program Files\Trend Micro\OfficeScan Client\tmlisten.exe
O23 - Service: OfficeScan NT Proxy Service (TmProxy) - Trend Micro Inc. - C:\Program Files\Trend Micro\OfficeScan Client\TmProxy.exe
O23 - Service: Cliché instantané de volume (VSS) - Unknown owner - C:\WINDOWS\System32\vssvc.exe
O23 - Service: Carte de performance WMI (WmiApSrv) - Unknown owner - C:\WINDOWS\System32\wbem\wmiapsrv.exe
O23 - Service: Service Partage réseau du Lecteur Windows Media (WMPNetworkSvc) - Unknown owner - C:\Program Files\Windows Media Player\WMPNetwk.exe