Débit assez lent

Bonjour,

Depuis quelques temps ma connexion a l'air assez lente et je n'arrive pas a savoir pourquoi bien qu'ayant cherché a de multiples reprises.

Voici un log Hijkackthis pour commencer :

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 20:01:56, on 02/01/2012
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\System32\smss.exe
C:\WINDOWS\SYSTEM32\system32\winlogon.exe
C:\WINDOWS\SYSTEM32\system32\services.exe
C:\WINDOWS\SYSTEM32\system32\lsass.exe
C:\WINDOWS\SYSTEM32\system32\Ati2evxx.exe
C:\WINDOWS\SYSTEM32\system32\svchost.exe
C:\WINDOWS\SYSTEM32\System32\svchost.exe
C:\WINDOWS\SYSTEM32\system32\Ati2evxx.exe
C:\WINDOWS\SYSTEM32\system32\spoolsv.exe
C:\Program Files\Avira\AntiVir Desktop\sched.exe
C:\WINDOWS\SYSTEM32\Explorer.EXE
C:\WINDOWS\SYSTEM32\RTHDCPL.EXE
C:\Program Files\Avira\AntiVir Desktop\avgnt.exe
C:\Program Files\Internet Download Manager\IDMan.exe
C:\Program Files\Windows Live\Messenger\msnmsgr.exe
C:\WINDOWS\SYSTEM32\system32\ctfmon.exe
C:\Program Files\Internet Download Manager\IEMonitor.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\LogMeIn Hamachi\hamachi-2.exe
C:\Program Files\Avira\AntiVir Desktop\avshadow.exe
C:\WINDOWS\SYSTEM32\system32\svchost.exe
C:\Program Files\Java\jre6\bin\jqs.exe
C:\WINDOWS\SYSTEM32\System32\svchost.exe
C:\WINDOWS\SYSTEM32\System32\svchost.exe
C:\WINDOWS\SYSTEM32\system32\svchost.exe
C:\Program Files\Avira\AntiVir Desktop\AVWEBGRD.EXE
C:\WINDOWS\SYSTEM32\system32\wbem\wmiapsrv.exe
C:\Program Files\Realtek\RTL8187B Wireless LAN Utility\RtWLan.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Program Files\Mozilla Firefox\plugin-container.exe
C:\Program Files\Mozilla Firefox\plugin-container.exe
C:\WINDOWS\SYSTEM32\system32\wuauclt.exe
C:\Program Files\Windows Live\Contacts\wlcomm.exe
C:\WINDOWS\SYSTEM32\system32\wuauclt.exe
C:\Documents and Settings\Yoann.MUGIYO\Bureau\HiJackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://www.plusnetwork.com/?sp=ctbar&q={searchTerms}&dp=MessengerPlus
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://www.plusnetwork.com/?sp=ctbar&q={searchTerms}&dp=MessengerPlus
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://fr.ask.com/?l=dis&o=100000080&gct=hp
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 Explorer\Search,Default_Search_URL = http://www.plusnetwork.com/?sp=ctbar&q={searchTerms}&dp=MessengerPlus
R1 - HKCU\Software\Microsoft\Internet Explorer\Search,SearchAssistant = http://www.plusnetwork.com/?sp=ctbar&q={searchTerms}&dp=MessengerPlus
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = *.local
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: IDM Helper - {0055C089-8582-441B-A0BF-17B458C2A3A8} - C:\Program Files\Internet Download Manager\IDMIECC.dll
O2 - BHO: Ask Toolbar BHO - {D4027C7F-154A-4066-A1AD-4243D8127440} - C:\Program Files\Ask.com\GenericAskToolbar.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: Avira SearchFree Toolbar plus Web Protection - {D4027C7F-154A-4066-A1AD-4243D8127440} - C:\Program Files\Ask.com\GenericAskToolbar.dll
O4 - HKLM\..\Run: [RTHDCPL] RTHDCPL.EXE
O4 - HKLM\..\Run: [avgnt] "C:\Program Files\Avira\AntiVir Desktop\avgnt.exe" /min
O4 - HKLM\..\Run: [StartCCC] "C:\Program Files\ATI Technologies\ATI.ACE\Core-Static\CLIStart.exe" MSRun
O4 - HKCU\..\Run: [IDMan] C:\Program Files\Internet Download Manager\IDMan.exe /onboot
O4 - HKCU\..\Run: [msnmsgr] "C:\Program Files\Windows Live\Messenger\msnmsgr.exe" /background
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\SYSTEM32\system32\ctfmon.exe
O4 - HKUS\S-1-5-19\..\Run: [CTFMON.EXE] C:\WINDOWS\SYSTEM32\system32\CTFMON.EXE (User 'SERVICE LOCAL')
O4 - HKUS\S-1-5-20\..\Run: [CTFMON.EXE] C:\WINDOWS\SYSTEM32\system32\CTFMON.EXE (User 'SERVICE RÉSEAU')
O4 - HKUS\S-1-5-18\..\Run: [CTFMON.EXE] C:\WINDOWS\SYSTEM32\system32\CTFMON.EXE (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [CTFMON.EXE] C:\WINDOWS\SYSTEM32\system32\CTFMON.EXE (User 'Default user')
O4 - Global Startup: REALTEK RTL8187B Wireless LAN Utility.lnk = C:\Program Files\Realtek\RTL8187B Wireless LAN Utility\RtWLan.exe
O8 - Extra context menu item: Télécharger avec IDM - C:\Program Files\Internet Download Manager\IEExt.htm
O8 - Extra context menu item: Télécharger tous les liens avec IDM - C:\Program Files\Internet Download Manager\IEGetAll.htm
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\SYSTEM32\Network Diagnostic\xpnetdiag.exe
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\SYSTEM32\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
O23 - Service: Avira AntiVir Scheduler (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: Avira AntiVir WebGuard (AntiVirWebService) - Avira GmbH - C:\Program Files\Avira\AntiVir Desktop\AVWEBGRD.EXE
O23 - Service: Apple Mobile Device - Apple Inc. - C:\Program Files\Fichiers communs\Apple\Mobile Device Support\AppleMobileDeviceService.exe
O23 - Service: Ati HotKey Poller - ATI Technologies Inc. - C:\WINDOWS\SYSTEM32\system32\Ati2evxx.exe
O23 - Service: Service Bonjour (Bonjour Service) - Apple Inc. - C:\Program Files\Bonjour\mDNSResponder.exe
O23 - Service: LogMeIn Hamachi Tunneling Engine (Hamachi2Svc) - LogMeIn Inc. - C:\Program Files\LogMeIn Hamachi\hamachi-2.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: Ma-Config Service (maconfservice) - CybelSoft - C:\Program Files\ma-config.com\maconfservice.exe