Ordinateur très lent au niveau d'internet...

Bonjour,
Voial depuis peu mon ordinateur n'est plus du tout aussi performant qu'avant, il lag énormément, et je pense avoir chopé une merde. Si quelqu'un pouvait m'aider ce serait sympa :) !
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Voici le rapport HiJackThis :
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Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 17:46:10, on 03/06/2011
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:\Program Files\Rising\Rav\RavMonD.exe
C:\windows\System32\svchost.exe
C:\windows\system32\svchost.exe
C:\windows\system32\spoolsv.exe
C:\Program Files\Fichiers communs\Apple\Mobile Device Support\AppleMobileDeviceService.exe
C:\Program Files\Bonjour\mDNSResponder.exe
C:\Program Files\Java\jre6\bin\jqs.exe
C:\Program Files\Nero\Nero8\Nero BackItUp\NBService.exe
C:\Program Files\Google\Update\1.3.21.57\GoogleCrashHandler.exe
C:\WINDOWS\system32\IoctlSvc.exe
C:\windows\system32\svchost.exe
C:\windows\Explorer.EXE
C:\windows\RTHDCPL.EXE
C:\Program Files\Rising\Rav\RsTray.exe
C:\windows\System32\svchost.exe
C:\Program Files\Fichiers communs\Java\Java Update\jusched.exe
C:\Program Files\iTunes\iTunesHelper.exe
C:\Program Files\Free Download Manager\fdm.exe
C:\Program Files\Fichiers communs\Nero\Lib\NMIndexStoreSvr.exe
C:\windows\system32\ctfmon.exe
C:\Program Files\uTorrent\uTorrent.exe
C:\Program Files\LOLReplay\LOLRecorder.exe
C:\Program Files\Fichiers communs\Nero\Lib\NMIndexingService.exe
C:\Program Files\iPod\bin\iPodService.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Program Files\Mozilla Firefox\plugin-container.exe
C:\Documents and Settings\Administrateur\Mes documents\Téléchargements\HiJackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://search.conduit.com?SearchSource=10&ctid=CT2851639
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 = ${URL_SEARCHPAGE}
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.tinit.org/
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = local;*.local
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
R3 - URLSearchHook: uTorrentBar_FR Toolbar - {05eeb91a-aef7-4f8a-978f-fb83e7b03f8e} - C:\Program Files\uTorrentBar_FR\tbuTor.dll
O2 - BHO: uTorrentBar_FR Toolbar - {05eeb91a-aef7-4f8a-978f-fb83e7b03f8e} - C:\Program Files\uTorrentBar_FR\tbuTor.dll
O2 - BHO: ShopperReports - {100EB1FD-D03E-47fd-81F3-EE91287F9465} - C:\Program Files\ShopperReports3\bin\3.0.470.0\ShopperReports.dll (file missing)
O2 - BHO: Conduit Engine - {30F9B915-B755-4826-820B-08FBA6BD249D} - C:\Program Files\ConduitEngine\ConduitEngine.dll
O2 - BHO: (no name) - {5C255C8A-E604-49b4-9D64-90988571CECB} - (no file)
O2 - BHO: EoBHO - {C7B76B90-3455-4AE6-A752-EAC4D19689E5} - C:\Program Files\EoRezo\EoAdv\EoRezoBHO.dll (file missing)
O2 - BHO: FDMIECookiesBHO Class - {CC59E0F9-7E43-44FA-9FAA-8377850BF205} - C:\Program Files\Free Download Manager\iefdm2.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
O3 - Toolbar: uTorrentBar_FR Toolbar - {05eeb91a-aef7-4f8a-978f-fb83e7b03f8e} - C:\Program Files\uTorrentBar_FR\tbuTor.dll
O3 - Toolbar: Conduit Engine - {30F9B915-B755-4826-820B-08FBA6BD249D} - C:\Program Files\ConduitEngine\ConduitEngine.dll
O4 - HKLM\..\Run: [RTHDCPL] RTHDCPL.EXE
O4 - HKLM\..\Run: [Alcmtr] ALCMTR.EXE
O4 - HKLM\..\Run: [NBKeyScan] "C:\Program Files\Nero\Nero8\Nero BackItUp\NBKeyScan.exe"
O4 - HKLM\..\Run: [SoftwareHelper] C:\Documents and Settings\Administrateur\Application Data\eoRezo\SoftwareUpdate\SoftwareUpdateHP.exe
O4 - HKLM\..\Run: [amd_dc_opt] C:\Program Files\AMD\Dual-Core Optimizer\amd_dc_opt.exe
O4 - HKLM\..\Run: [RavTray] "C:\Program Files\Rising\Rav\RsTray.exe" -system
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Fichiers communs\Java\Java Update\jusched.exe"
O4 - HKLM\..\Run: [cspep.exe] C:\Program Files\cspep\cspep.exe
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [AppleSyncNotifier] C:\Program Files\Fichiers communs\Apple\Mobile Device Support\AppleSyncNotifier.exe
O4 - HKLM\..\Run: [iTunesHelper] "C:\Program Files\iTunes\iTunesHelper.exe"
O4 - HKCU\..\Run: [Free Download Manager] C:\Program Files\Free Download Manager\fdm.exe -autorun
O4 - HKCU\..\Run: [IndxStoreSvr_{79662E04-7C6C-4d9f-84C7-88D8A56B10AA}] "C:\Program Files\Fichiers communs\Nero\Lib\NMIndexStoreSvr.exe" ASO-616B5711-6DAE-4795-A05F-39A1E5104020
O4 - HKCU\..\Run: [ctfmon.exe] C:\windows\system32\ctfmon.exe
O4 - HKCU\..\Run: [uTorrent] "C:\Program Files\uTorrent\uTorrent.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: Adobe Gamma.lnk = C:\Program Files\Fichiers communs\Adobe\Calibration\Adobe Gamma Loader.exe
O4 - Global Startup: LOLRecorder.lnk = C:\Program Files\LOLReplay\LOLRecorder.exe
O8 - Extra context menu item: Add to Google Photos Screensa&ver - res://C:\windows\system32\GPhotos.scr/200
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
O8 - Extra context menu item: Tout télécharger avec Free Download Manager - file://C:\Program Files\Free Download Manager\dlall.htm
O8 - Extra context menu item: Télécharger avec Free Download Manager - file://C:\Program Files\Free Download Manager\dllink.htm
O8 - Extra context menu item: Télécharger la sélection avec Free Download Manager - file://C:\Program Files\Free Download Manager\dlselected.htm
O8 - Extra context menu item: Télécharger la vidéo avec Free Download Manager - file://C:\Program Files\Free Download Manager\dlfvideo.htm
O9 - Extra button: (no name) - {09E90109-A9AA-4980-BCEF-76F8D924E902} - (no file)
O9 - Extra button: Recherche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
O9 - Extra button: ShopperReports - Compare product prices - {C5428486-50A0-4a02-9D20-520B59A9F9B2} - C:\Program Files\ShopperReports3\bin\3.0.470.0\ShopperReports.dll (file missing)
O9 - Extra button: ShopperReports - Compare travel rates - {C5428486-50A0-4a02-9D20-520B59A9F9B3} - C:\Program Files\ShopperReports3\bin\3.0.470.0\ShopperReports.dll (file missing)
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 (file missing)
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe (file missing)
O9 - Extra button: (no name) - {09E90109-A9AA-4980-BCEF-76F8D924E902} - (no file) (HKCU)
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://update.microsoft.com/windowsupdate/v6/V5Controls/en/x86/client/wuweb_site.cab?1246718207903
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://fpdownload2.macromedia.com/get/shockwave/cabs/flash/swflash.cab
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\PROGRA~1\FICHIE~1\Skype\SKYPE4~1.DLL
O23 - Service: Adobe LM Service - Adobe Systems - C:\Program Files\Fichiers communs\Adobe Systems Shared\Service\Adobelmsvc.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 Google Update (gupdate1ca97626792e5f0) (gupdate1ca97626792e5f0) - 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 Updater Service (gusvc) - Google - C:\Program Files\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Fichiers communs\InstallShield\Driver\11\Intel 32\IDriverT.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: Nero BackItUp Scheduler 3 - Nero AG - C:\Program Files\Nero\Nero8\Nero BackItUp\NBService.exe
O23 - Service: NMIndexingService - Nero AG - C:\Program Files\Fichiers communs\Nero\Lib\NMIndexingService.exe
O23 - Service: nProtect GameGuard Service (npggsvc) - Unknown owner - C:\windows\system32\GameMon.des.exe (file missing)
O23 - Service: PLFlash DeviceIoControl Service - Prolific Technology Inc. - C:\WINDOWS\system32\IoctlSvc.exe
O23 - Service: Rav Service (RsRavMon) - Beijing Rising Information Technology Co., Ltd. - C:\Program Files\Rising\Rav\RavMonD.exe