Internet très lent

Voilà depuis quelques jours j'ai l'impression que ma connexion internet est beaucoup plus lente, je ne vois pas pourquoi... Vu que le PC en Ethernet va aussi plus lentement je ne vois pas d'où peut venir le problème. Enfin pour plus de sureté, j'ai scanné mon PC avec !Avast et aucun virus apparemment, j'ai aussi fait un scan avec spybot et j'ai effacé quelques trucs inutiles. Pour finir j'ai utilisé HiJackThis et voici le log:

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 09:36:10, on 11/11/2008
Platform: Windows Vista SP1 (WinNT 6.00.1905)
MSIE: Internet Explorer v7.00 (7.00.6001.18000)
Boot mode: Normal

Running processes:
C:\Windows\system32\taskeng.exe
C:\Windows\system32\Dwm.exe
C:\Program Files\ASUS\ASUS Live Update\ALU.exe
C:\Windows\Explorer.EXE
C:\Program Files\Avast4\ashDisp.exe
C:\Program Files\Razer\Copperhead\razerhid.exe
C:\Program Files\iTunes\iTunesHelper.exe
C:\Windows\ehome\ehtray.exe
C:\Program Files\Windows Media Player\wmpnscfg.exe
C:\Program Files\Spybot\TeaTimer.exe
C:\Windows\ehome\ehmsas.exe
C:\Program Files\ASUS Security Center\ASUS Security Protect Manager\Bin\AsGHost.exe
C:\Program Files\Razer\Copperhead\razerofa.exe
C:\Program Files\Azureus\Azureus.exe
C:\Program Files\iTunes\iTunes.exe
C:\Program Files\Razer\Copperhead\razertra.exe
C:\Program Files\Spybot\SpybotSD.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Program Files\mIRC\mirc.exe
C:\Program Files\HijackThis\HijackThis.exe
C:\Windows\system32\SearchFilterHost.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.asus.com
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://google.huddi.com
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.asus.com
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://lo.st
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = *.local
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
O1 - Hosts: ::1 localhost
O2 - BHO: Aide pour le lien d'Adobe PDF Reader - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelper.dll
O2 - BHO: ASUS Security Protect Manager - {DF21F1DB-80C6-11D3-9483-B03D0EC10000} - C:\Program Files\ASUS Security Center\ASUS Security Protect Manager\Bin\ItIEAddIn.dll
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [razer] C:\Program Files\Razer\Copperhead\razerhid.exe
O4 - HKLM\..\Run: [Copperhead] C:\Program Files\Razer\Copperhead\razerhid.exe
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\QTTask.exe" -atboottime
O4 - HKLM\..\Run: [AppleSyncNotifier] C:\Program Files\Common Files\Apple\Mobile Device Support\bin\AppleSyncNotifier.exe
O4 - HKLM\..\Run: [iTunesHelper] "C:\Program Files\iTunes\iTunesHelper.exe"
O4 - HKCU\..\Run: [ehTray.exe] C:\Windows\ehome\ehTray.exe
O4 - HKCU\..\Run: [WMPNSCFG] C:\Program Files\Windows Media Player\WMPNSCFG.exe
O4 - HKCU\..\Run: [SpybotSD TeaTimer] C:\Program Files\Spybot\TeaTimer.exe
O4 - HKUS\S-1-5-19\..\Run: [Sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /detectMem (User 'SERVICE LOCAL')
O4 - HKUS\S-1-5-19\..\Run: [WindowsWelcomeCenter] rundll32.exe oobefldr.dll,ShowWelcomeCenter (User 'SERVICE LOCAL')
O4 - HKUS\S-1-5-20\..\Run: [Sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /detectMem (User 'SERVICE RÉSEAU')
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office12\EXCEL.EXE/3000
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office12\EXCEL.EXE/3000
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\Office12\REFIEBAR.DLL
O13 - Gopher Prefix:
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://fpdownload2.macromedia.com/ [...] wflash.cab
O20 - AppInit_DLLs: APSHook.dll
O23 - Service: Agere Modem Call Progress Audio (AgereModemAudio) - Agere Systems - C:\Windows\system32\agrsmsvc.exe
O23 - Service: Apple Mobile Device - Apple Inc. - C:\Program Files\Common Files\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
O23 - Service: ASLDR Service (ASLDRService) - Unknown owner - C:\Program Files\ATK Hotkey\ASLDRSrv.exe
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - ALWIL Software - C:\Program Files\Avast4\aswUpdSv.exe
O23 - Service: Ati External Event Utility - ATI Technologies Inc. - C:\Windows\system32\Ati2evxx.exe
O23 - Service: ATKGFNEX Service (ATKGFNEXSrv) - Unknown owner - C:\Program Files\ATKGFNEX\GFNEXSrv.exe
O23 - Service: avast! Antivirus - ALWIL Software - C:\Program Files\Avast4\ashServ.exe
O23 - Service: avast! Mail Scanner - ALWIL Software - C:\Program Files\Avast4\ashMaiSv.exe
O23 - Service: avast! Web Scanner - ALWIL Software - C:\Program Files\Avast4\ashWebSv.exe
O23 - Service: Service Bonjour (Bonjour Service) - Apple Inc. - C:\Program Files\Bonjour\mDNSResponder.exe
O23 - Service: Intel(R) PROSet/Wireless Event Log (EvtEng) - Intel Corporation - C:\Program Files\Intel\Wireless\Bin\EvtEng.exe
O23 - Service: Intel(R) Matrix Storage Event Monitor (IAANTMON) - Intel Corporation - C:\Program Files\Intel\Intel Matrix Storage Manager\IAANTMon.exe
O23 - Service: Service de l’iPod (iPod Service) - Apple Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: LightScribeService Direct Disc Labeling Service (LightScribeService) - Hewlett-Packard Company - C:\Program Files\Common Files\LightScribe\LSSrvc.exe
O23 - Service: NMSAccessU - Unknown owner - C:\Program Files\CDBurnerXP\NMSAccessU.exe
O23 - Service: PnkBstrA - Unknown owner - C:\Windows\system32\PnkBstrA.exe
O23 - Service: PnkBstrB - Unknown owner - C:\Windows\system32\PnkBstrB.exe
O23 - Service: Intel(R) PROSet/Wireless Registry Service (RegSrvc) - Intel Corporation - C:\Program Files\Intel\Wireless\Bin\RegSrvc.exe
O23 - Service: SBSD Security Center Service (SBSDWSCService) - Safer Networking Ltd. - C:\Program Files\Spybot\SDWinSec.exe
O23 - Service: spmgr - Unknown owner - C:\Program Files\ASUS\NB Probe\SPM\spmgr.exe
O23 - Service: Steam Client Service - Valve Corporation - C:\Program Files\Common Files\Steam\SteamService.exe

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End of file - 6414 bytes

Si quelqu'un pouvait m'aider, merci d'avance,

Mort2Peur

UP!