Ordi très lent

Bonjour/Bonsoir,

Depuis quelques temps mon ordi est très lent voici un scan hijackthis. Merci d'avance

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 05:11:43, on 04/09/2010
Platform: Windows Vista SP1 (WinNT 6.00.1905)
MSIE: Internet Explorer v8.00 (8.00.6001.18943)
Boot mode: Normal

Running processes:
C:\Windows\system32\Dwm.exe
C:\Windows\system32\taskeng.exe
C:\Windows\Explorer.EXE
C:\Program Files\Avira\AntiVir Desktop\avgnt.exe
C:\Program Files\Common Files\Java\Java Update\jusched.exe
C:\Windows\RtHDVCpl.exe
C:\Program Files\UVC Video Camera\UVCSti.exe
C:\Program Files\UVC Video Camera\EffectDir\UVCTray.exe
C:\Program Files\OfferBox\OfferBox.exe
C:\Windows\system32\wbem\unsecapp.exe
C:\Program Files\IVT Corporation\BlueSoleil\BlueSoleil.exe
C:\Program Files\Common Files\Adobe\ARM\1.0\AdobeARM.exe
C:\Program Files\SUPERAntiSpyware\SUPERAntiSpyware.exe
C:\Windows\system32\conime.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Program Files\SFR\Media Center\MediaCenter.exe
C:\Program Files\SFR\Media Center\httpd\httpd.exe
C:\Program Files\SFR\Media Center\httpd\httpd.exe
C:\Program Files\Mozilla Firefox\plugin-container.exe
C:\Windows\system32\wuauclt.exe
C:\Users\Caurette\Desktop\HiJackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer,SearchURL = http://www.cherche.us/keyword/%s
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.cherche.us
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://www.cherche.us/keyword/
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://www.cherche.us
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://www.cherche.us
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.cherche.us
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://fr.msn.com/
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant = http://www.cherche.us
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page_bak = http://www.cherche.us
O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O2 - BHO: Search Helper - {6EBF7485-159F-4bff-A14F-B9E3AAC4465B} - C:\Program Files\Microsoft\Search Enhancement Pack\Search Helper\SEPsearchhelperie.dll
O2 - BHO: Programme d'aide de l'Assistant de connexion Windows Live - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files\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\Java\jre6\bin\jp2ssv.dll
O2 - BHO: Windows Live Toolbar Helper - {E15A8DC0-8516-42A1-81EA-DC94EC1ACF10} - C:\Program Files\Windows Live\Toolbar\wltcore.dll
O2 - BHO: HP Smart BHO Class - {FFFFFFFF-CF4E-4F2B-BDC2-0E72E116A856} - C:\Program Files\HP\Digital Imaging\Smart Web Printing\hpswp_BHO.dll
O3 - Toolbar: &Windows Live Toolbar - {21FA44EF-376D-4D53-9B0F-8A89D3229068} - C:\Program Files\Windows Live\Toolbar\wltcore.dll
O4 - HKLM\..\Run: [avgnt] "C:\Program Files\Avira\AntiVir Desktop\avgnt.exe" /min
O4 - HKLM\..\Run: [RtHDVCpl] RtHDVCpl.exe
O4 - HKCU\..\Run: [msnmsgr] "C:\Program Files\Windows Live\Messenger\msnmsgr.exe" /background
O4 - HKUS\S-1-5-18\..\Run: [msnmsgr] "C:\Program Files\Windows Live\Messenger\msnmsgr.exe" /background (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [msnmsgr] "C:\Program Files\Windows Live\Messenger\msnmsgr.exe" /background (User 'Default user')
O8 - Extra context menu item: Recherche avec cherche.us - C:\Users\Caurette\scriptjava.html
O9 - Extra button: Ajout Direct - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra 'Tools' menuitem: &Ajout Direct dans Windows Live Writer - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra button: PokerStars - {3AD14F0C-ED16-4e43-B6D8-661B03F6A1EF} - C:\Program Files\PokerStars\PokerStarsUpdate.exe
O9 - Extra button: PokerStars.fr - {90EAE591-7E7E-434a-8E28-ECFD00071806} - C:\Program Files\PokerStars.FR\PokerStarsUpdate.exe
O9 - Extra button: Sélection intelligente HP - {DDE87865-83C5-48c4-8357-2F5B1AA84522} - C:\Program Files\HP\Digital Imaging\Smart Web Printing\hpswp_BHO.dll
O13 - Gopher Prefix:
O15 - Trusted Zone: *.chat-land.org
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\Windows\system32\Skype4COM.dll
O23 - Service: ACam Setup serivce (ACam Setup serivce) - Unknown owner - C:\Program Files\UVC Video Camera\ACamsvc.exe
O23 - Service: ePerformance Service (AcerMemUsageCheckService) - Unknown owner - C:\Acer\Empowering Technology\ePerformance\MemCheck.exe
O23 - Service: AG Windows Service (AGWinService) - Unknown owner - C:\Program Files\AGI\common\win32\PythonService.exe (file missing)
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\Common Files\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
O23 - Service: BlueSoleil Hid Service - Unknown owner - C:\Program Files\IVT Corporation\BlueSoleil\BTNtService.exe
O23 - Service: Service Bonjour (Bonjour Service) - Apple Inc. - C:\Program Files\Bonjour\mDNSResponder.exe
O23 - Service: CyberLink Background Capture Service (CBCS) (CLCapSvc) - Unknown owner - C:\Acer\Empowering Technology\eMode\PCM\Kernel\TV\CLCapSvc.exe
O23 - Service: CyberLink Task Scheduler (CTS) (CLSched) - Unknown owner - C:\Acer\Empowering Technology\eMode\PCM\Kernel\TV\CLSched.exe
O23 - Service: eRecovery Service (eRecoveryService) - Acer Inc. - C:\Acer\Empowering Technology\eRecovery\eRecoveryService.exe
O23 - Service: InCD File System Service (InCDsrv) - Unknown owner - C:\Program Files\Ahead\InCD\InCDsrv.exe (file missing)
O23 - Service: LightScribeService Direct Disc Labeling Service (LightScribeService) - Hewlett-Packard Company - C:\Program Files\Common Files\LightScribe\LSSrvc.exe
O23 - Service: Ma-Config Service (maconfservice) - CybelSoft - C:\Program Files\ma-config.com\maconfservice.exe
O23 - Service: Planificateur LiveUpdate automatique - Unknown owner - C:\Program Files\Symantec\LiveUpdate\ALUSchedulerSvc.exe (file missing)
O23 - Service: Start BT in service - Unknown owner - C:\Program Files\IVT Corporation\BlueSoleil\StartSkysolSvc.exe
O23 - Service: WlanWpsSvc - Unknown owner - C:\Program Files\D-Link\DWA-131 revA\WlanWpsSvc.exe