Ordinateur ralenti... comme beaucoup

Bonjour,

J'ai des problèmes de ralentissement extrême, depuis 2 ou 3 jours, sans avoir ajouté de programme récemment.
J'ai fait un Hijackthis mais je suis incapable de le "lire"...
Est-ce que quelqu'un pourrait me donner son avis ?

Merci d'avance,
Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 12:58:57, on 08/05/2012
Platform: Windows XP SP3 (WinNT 5.01.2600)
MSIE: Internet Explorer v8.00 (8.00.6001.18702)
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:\Program Files\Alwil Software\Avast5\AvastSvc.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Fichiers communs\ArcSoft\Connection Service\Bin\ACService.exe
C:\Program Files\Fichiers communs\Apple\Mobile Device Support\AppleMobileDeviceService.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Application Updater\ApplicationUpdater.exe
C:\PROGRA~1\AVG\AVG8\avgwdsvc.exe
C:\Program Files\Microsoft\BingBar\SeaPort.EXE
C:\Program Files\Bonjour\mDNSResponder.exe
C:\Program Files\NVIDIA Corporation\NetworkAccessManager\Apache Group\Apache2\bin\apache.exe
C:\PROGRA~1\AVG\AVG8\avgrsx.exe
C:\Program Files\Java\jre6\bin\jqs.exe
C:\PROGRA~1\AVG\AVG8\avgtray.exe
C:\PROGRA~1\ALWILS~1\Avast5\avastUI.exe
C:\WINDOWS\system32\RUNDLL32.EXE
C:\WINDOWS\RTHDCPL.EXE
C:\Program Files\Fichiers communs\Java\Java Update\jusched.exe
C:\program files\real\realplayer\update\realsched.exe
C:\Program Files\Radica\GirlTech\SS_MW.exe
C:\Program Files\Kodak\MediaImpression\ArcMonitor.exe
C:\Program Files\Fichiers communs\ArcSoft\Connection Service\Bin\ACDaemon.exe
C:\Program Files\iTunes\iTunesHelper.exe
C:\Program Files\Kodak\KODAK Share Button App\Listener.exe
C:\Program Files\Hewlett-Packard\HP PrecisionScan\PrecisionScan Pro\hplamp.exe
C:\Program Files\Fichiers communs\Spigot\Search Settings\SearchSettings.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\CDBurnerXP\NMSAccessU.exe
C:\Program Files\Skype\Phone\Skype.exe
C:\Program Files\NVIDIA Corporation\NetworkAccessManager\bin\nSvcLog.exe
C:\Program Files\Fichiers communs\ArcSoft\Connection Service\Bin\ArcCon.ac
C:\Program Files\NVIDIA Corporation\NetworkAccessManager\Apache Group\Apache2\bin\apache.exe
C:\WINDOWS\system32\nvsvc32.exe
C:\Program Files\McAfee Security Scan\2.0.181\SSScheduler.exe
C:\WINDOWS\system32\svchost.exe
C:\Documents and Settings\Proprietaire\Application Data\Dropbox\bin\Dropbox.exe
C:\Program Files\OpenOffice.org 3\program\soffice.exe
C:\PROGRA~1\AVG\AVG8\avgemc.exe
C:\Program Files\NVIDIA Corporation\NetworkAccessManager\bin\nSvcIp.exe
C:\Program Files\OpenOffice.org 3\program\soffice.bin
C:\Program Files\AVG\AVG8\avgcsrvx.exe
C:\Program Files\iPod\bin\iPodService.exe
C:\WINDOWS\system32\wbem\wmiapsrv.exe
C:\Program Files\Fichiers communs\Java\Java Update\jucheck.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Program Files\Mozilla Firefox\plugin-container.exe
C:\Program Files\Mozilla Thunderbird\thunderbird.exe
C:\PROGRA~1\AVG\AVG8\avgnsx.exe
C:\Program Files\AVG\AVG8\avgscanx.exe
C:\Program Files\AVG\AVG8\avgcsrvx.exe
C:\Program Files\Trend Micro\HijackThis\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://go.microsoft.com/fwlink/?LinkId=69157
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.fr/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://go.microsoft.com/fwlink/?LinkId=69157
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://go.microsoft.com/fwlink/?LinkId=54896
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://go.microsoft.com/fwlink/?LinkId=69157
R1 - HKCU\Software\Microsoft\Internet Connection Wizard,ShellNext = http://windowsupdate.microsoft.com/
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = *.local
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
R3 - URLSearchHook: pdfforge Toolbar - {B922D405-6D13-4A2B-AE89-08A030DA4402} - C:\Program Files\pdfforge Toolbar\IE\5.6\pdfforgeToolbarIE.dll
R3 - URLSearchHook: Softonic_France Toolbar - {4daac69c-cba7-45e2-9bc8-1044483d3352} - C:\Program Files\Softonic_France\prxtbSof0.dll
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: RealPlayer Download and Record Plugin for Internet Explorer - {3049C3E9-B461-4BC5-8870-4C09146192CA} - C:\Documents and Settings\All Users\Application Data\Real\RealPlayer\BrowserRecordPlugin\IE\rpbrowserrecordplugin.dll
O2 - BHO: Conduit Engine - {30F9B915-B755-4826-820B-08FBA6BD249D} - C:\Program Files\ConduitEngine\prxConduitEngine.dll
O2 - BHO: WormRadar.com IESiteBlocker.NavFilter - {3CA2F312-6F6E-4B53-A66E-4E65E497C8C0} - C:\Program Files\AVG\AVG8\avgssie.dll
O2 - BHO: Softonic_France - {4daac69c-cba7-45e2-9bc8-1044483d3352} - C:\Program Files\Softonic_France\prxtbSof0.dll
O2 - BHO: (no name) - {5C255C8A-E604-49b4-9D64-90988571CECB} - (no file)
O2 - BHO: avast! WebRep - {8E5E2654-AD2D-48bf-AC2D-D17F00898D06} - C:\Program Files\Alwil Software\Avast5\aswWebRepIE.dll
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: SkypeIEPluginBHO - {AE805869-2E5C-4ED4-8F7B-F1F7851A4497} - C:\Program Files\Skype\Toolbars\Internet Explorer\skypeieplugin.dll
O2 - BHO: Google Toolbar Notifier BHO - {AF69DE43-7D58-4638-B6FA-CE66B5AD205D} - C:\Program Files\Google\GoogleToolbarNotifier\5.2.4204.1700\swg.dll
O2 - BHO: pdfforge Toolbar - {B922D405-6D13-4A2B-AE89-08A030DA4402} - C:\Program Files\pdfforge Toolbar\IE\5.6\pdfforgeToolbarIE.dll
O2 - BHO: Bing Bar Helper - {d2ce3e00-f94a-4740-988e-03dc2f38c34f} - "C:\Program Files\Microsoft\BingBar\BingExt.dll" (file missing)
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
O3 - Toolbar: Softonic_France Toolbar - {4daac69c-cba7-45e2-9bc8-1044483d3352} - C:\Program Files\Softonic_France\prxtbSof0.dll
O3 - Toolbar: Conduit Engine - {30F9B915-B755-4826-820B-08FBA6BD249D} - C:\Program Files\ConduitEngine\prxConduitEngine.dll
O3 - Toolbar: Bing Bar - {8dcb7100-df86-4384-8842-8fa844297b3f} - "C:\Program Files\Microsoft\BingBar\BingExt.dll" (file missing)
O3 - Toolbar: avast! WebRep - {8E5E2654-AD2D-48bf-AC2D-D17F00898D06} - C:\Program Files\Alwil Software\Avast5\aswWebRepIE.dll
O3 - Toolbar: pdfforge Toolbar - {B922D405-6D13-4A2B-AE89-08A030DA4402} - C:\Program Files\pdfforge Toolbar\IE\5.6\pdfforgeToolbarIE.dll
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Program Files\Adobe\Reader 8.0\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [AVG8_TRAY] C:\PROGRA~1\AVG\AVG8\avgtray.exe
O4 - HKLM\..\Run: [avast5] C:\PROGRA~1\ALWILS~1\Avast5\avastUI.exe /nogui
O4 - HKLM\..\Run: [NvMediaCenter] RUNDLL32.EXE C:\WINDOWS\system32\NvMcTray.dll,NvTaskbarInit
O4 - HKLM\..\Run: [RTHDCPL] RTHDCPL.EXE
O4 - HKLM\..\Run: [Alcmtr] ALCMTR.EXE
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Fichiers communs\Java\Java Update\jusched.exe"
O4 - HKLM\..\Run: [TkBellExe] "C:\program files\real\realplayer\update\realsched.exe" -osboot
O4 - HKLM\..\Run: [SS_MW] C:\Program Files\Radica\GirlTech\SS_MW.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: [ArcSoft MediaImpression Monitor] C:\Program Files\Kodak\MediaImpression\ArcMonitor.exe
O4 - HKLM\..\Run: [ArcSoft Connection Service] C:\Program Files\Fichiers communs\ArcSoft\Connection Service\Bin\ACDaemon.exe
O4 - HKLM\..\Run: [iTunesHelper] "C:\Program Files\iTunes\iTunesHelper.exe"
O4 - HKLM\..\Run: [KodakShareButtonApp] C:\Program Files\Kodak\KODAK Share Button App\Listener.exe
O4 - HKLM\..\Run: [HP Lamp] "C:\Program Files\Hewlett-Packard\HP PrecisionScan\PrecisionScan Pro\hplamp.exe"
O4 - HKLM\..\Run: [SearchSettings] "C:\Program Files\Fichiers communs\Spigot\Search Settings\SearchSettings.exe"
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [swg] C:\Program Files\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe
O4 - HKCU\..\Run: [Skype] "C:\Program Files\Skype\Phone\Skype.exe" /nosplash /minimized
O4 - HKCU\..\Run: [KGShareApp] C:\Program Files\Kodak\KODAK Share Button App\KGShare_App.exe
O4 - HKUS\S-1-5-19\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SERVICE LOCAL')
O4 - HKUS\S-1-5-20\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SERVICE RÉSEAU')
O4 - HKUS\S-1-5-18\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'Default user')
O4 - Startup: Dropbox.lnk = C:\Documents and Settings\Proprietaire\Application Data\Dropbox\bin\Dropbox.exe
O4 - Startup: OpenOffice.org 3.2.lnk = C:\Program Files\OpenOffice.org 3\program\quickstart.exe
O4 - Global Startup: McAfee Security Scan Plus.lnk = ?
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: Click to call with Skype - {898EA8C8-E7FF-479B-8935-AEC46303B9E5} - C:\Program Files\Skype\Toolbars\Internet Explorer\skypeieplugin.dll
O9 - Extra 'Tools' menuitem: Click to call with Skype - {898EA8C8-E7FF-479B-8935-AEC46303B9E5} - C:\Program Files\Skype\Toolbars\Internet Explorer\skypeieplugin.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
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O16 - DPF: {0CCA191D-13A6-4E29-B746-314DEE697D83} (Facebook Photo Uploader 5 Control) - http://upload.facebook.com/controls/2008.10.10_v5.5.8/FacebookPhotoUploader5.cab
O16 - DPF: {8100D56A-5661-482C-BEE8-AFECE305D968} (Facebook Photo Uploader 5 Control) - http://upload.facebook.com/controls/2009.07.28_v5.5.8.1/FacebookPhotoUploader55.cab
O16 - DPF: {9DF1C00D-8426-4337-972C-DC042D19A916} (FTMediaPlayer Class) - http://webtv.guidetv.orange.fr/resources/OCS_9418.cab
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://fpdownload2.macromedia.com/get/shockwave/cabs/flash/swflash.cab
O18 - Protocol: linkscanner - {F274614C-63F8-47D5-A4D1-FBDDE494F8D1} - C:\Program Files\AVG\AVG8\avgpp.dll
O18 - Protocol: skype-ie-addon-data - {91774881-D725-4E58-B298-07617B9B86A8} - C:\Program Files\Skype\Toolbars\Internet Explorer\skypeieplugin.dll
O20 - Winlogon Notify: avgrsstarter - C:\WINDOWS\SYSTEM32\avgrsstx.dll
O23 - Service: ArcSoft Connect Daemon (ACDaemon) - ArcSoft Inc. - C:\Program Files\Fichiers communs\ArcSoft\Connection Service\Bin\ACService.exe
O23 - Service: Adobe Flash Player Update Service (AdobeFlashPlayerUpdateSvc) - Adobe Systems Incorporated - C:\WINDOWS\system32\Macromed\Flash\FlashPlayerUpdateService.exe
O23 - Service: Apple Mobile Device - Apple Inc. - C:\Program Files\Fichiers communs\Apple\Mobile Device Support\AppleMobileDeviceService.exe
O23 - Service: Application Updater - Spigot, Inc. - C:\Program Files\Application Updater\ApplicationUpdater.exe
O23 - Service: avast! Antivirus - AVAST Software - C:\Program Files\Alwil Software\Avast5\AvastSvc.exe
O23 - Service: AVG8 E-mail Scanner (avg8emc) - AVG Technologies CZ, s.r.o. - C:\PROGRA~1\AVG\AVG8\avgemc.exe
O23 - Service: AVG8 WatchDog (avg8wd) - AVG Technologies CZ, s.r.o. - C:\PROGRA~1\AVG\AVG8\avgwdsvc.exe
O23 - Service: Service Bonjour (Bonjour Service) - Apple Inc. - C:\Program Files\Bonjour\mDNSResponder.exe
O23 - Service: Forceware Web Interface (ForcewareWebInterface) - Apache Software Foundation - C:\Program Files\NVIDIA Corporation\NetworkAccessManager\Apache Group\Apache2\bin\apache.exe
O23 - Service: Service Google Update (gupdate1ca25cac9bac504) (gupdate1ca25cac9bac504) - Google Inc. - C:\Program Files\Google\Update\GoogleUpdate.exe
O23 - Service: Service Google Update (gupdatem) (gupdatem) - Google Inc. - C:\Program Files\Google\Update\GoogleUpdate.exe
O23 - Service: Google Software Updater (gusvc) - Google - C:\Program Files\Google\Common\Google Updater\GoogleUpdaterService.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: McAfee Security Scan Component Host Service (McComponentHostService) - McAfee, Inc. - C:\Program Files\McAfee Security Scan\2.0.181\McCHSvc.exe
O23 - Service: Mozilla Maintenance Service (MozillaMaintenance) - Mozilla Foundation - C:\Program Files\Mozilla Maintenance Service\maintenanceservice.exe
O23 - Service: NMSAccessU - Unknown owner - C:\Program Files\CDBurnerXP\NMSAccessU.exe
O23 - Service: ForceWare IP service (nSvcIp) - NVIDIA Corporation - C:\Program Files\NVIDIA Corporation\NetworkAccessManager\bin\nSvcIp.exe
O23 - Service: ForceWare user log service (nSvcLog) - NVIDIA Corporation - C:\Program Files\NVIDIA Corporation\NetworkAccessManager\bin\nSvcLog.exe
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\system32\nvsvc32.exe