Connexion lente, virus ?

Bonjour, je suis en 1méga chez wanadoo et ma connexion est très lente parfois sans aucune raison, je pense sans me poser plus de questions que c'est un virus ou quelque infection de ce genre qui se connecte à internet.

Voici mon log HijackThis:

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 15:08:16, on 16/09/2007
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)
Boot mode: Normal

Running processes:
D:\WINDOWS\System32\smss.exe
D:\WINDOWS\system32\winlogon.exe
D:\WINDOWS\system32\services.exe
D:\WINDOWS\system32\lsass.exe
D:\WINDOWS\system32\svchost.exe
D:\WINDOWS\System32\svchost.exe
D:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
D:\Program Files\Alwil Software\Avast4\ashServ.exe
D:\WINDOWS\system32\nvsvc32.exe
D:\WINDOWS\System32\svchost.exe
D:\WINDOWS\wlancfg.exe
D:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
D:\Program Files\Alwil Software\Avast4\ashWebSv.exe
D:\WINDOWS\Explorer.EXE
D:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
D:\Program Files\ASUS\AASP\1.00.05\aaCenter.exe
D:\Program Files\ASUS\AI Suite\AiNap\AiNap.exe
D:\Program Files\Java\jre1.6.0_02\bin\jusched.exe
D:\Program Files\Razer\DeathAdder\razerhid.exe
D:\WINDOWS\system32\RUNDLL32.EXE
D:\Program Files\Analog Devices\Core\smax4pnp.exe
D:\Program Files\Analog Devices\SoundMAX\Smax4.exe
D:\WINDOWS\system32\ctfmon.exe
D:\Program Files\Skype\Phone\Skype.exe
D:\Program Files\DAEMON Tools\daemon.exe
D:\Program Files\Razer\DeathAdder\razertra.exe
D:\Program Files\Razer\DeathAdder\razerofa.exe
D:\Program Files\Skype\Plugin Manager\skypePM.exe
D:\Program Files\Steam\Steam.exe
D:\Program Files\Mozilla Firefox\firefox.exe
D:\Documents and Settings\Vincent\Mes documents\Mes Downloads\zaSetup_fr.exe
D:\Documents and Settings\Vincent\Bureau\HiJackThis\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.fr/
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: flashget urlcatch - {2F364306-AA45-47B5-9F9D-39A8B94E7EF7} - D:\Program Files\FlashGet\jccatch.dll
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - D:\PROGRA~1\SPYBOT~1\SDHelper.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - D:\Program Files\Java\jre1.6.0_02\bin\ssv.dll
O2 - BHO: FlashGet GetFlash Class - {F156768E-81EF-470C-9057-481BA8380DBA} - D:\Program Files\FlashGet\getflash.dll
O4 - HKLM\..\Run: [BluetoothAuthenticationAgent] rundll32.exe irprops.cpl,,BluetoothAuthenticationAgent
O4 - HKLM\..\Run: [avast!] D:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [Install_BlueDSL] I:\Install.exe
O4 - HKLM\..\Run: [AsusServiceProvider] D:\Program Files\ASUS\AASP\1.00.05\aaCenter.exe
O4 - HKLM\..\Run: [Ai Nap] "D:\Program Files\ASUS\AI Suite\AiNap\AiNap.exe"
O4 - HKLM\..\Run: [SunJavaUpdateSched] "D:\Program Files\Java\jre1.6.0_02\bin\jusched.exe"
O4 - HKLM\..\Run: [DeathAdder] D:\Program Files\Razer\DeathAdder\razerhid.exe
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE D:\WINDOWS\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [NvMediaCenter] RUNDLL32.EXE D:\WINDOWS\system32\NvMcTray.dll,NvTaskbarInit
O4 - HKLM\..\Run: [QuickTime Task] "D:\Program Files\QuickTime\QTTask.exe" -atboottime
O4 - HKLM\..\Run: [SoundMAXPnP] D:\Program Files\Analog Devices\Core\smax4pnp.exe
O4 - HKLM\..\Run: [SoundMAX] "D:\Program Files\Analog Devices\SoundMAX\Smax4.exe" /tray
O4 - HKCU\..\Run: [CTFMON.EXE] D:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [Skype] "D:\Program Files\Skype\Phone\Skype.exe" /nosplash /minimized
O4 - HKCU\..\Run: [DAEMON Tools] "D:\Program Files\DAEMON Tools\daemon.exe" -lang 1033
O4 - HKUS\S-1-5-19\..\Run: [CTFMON.EXE] D:\WINDOWS\System32\CTFMON.EXE (User 'SERVICE LOCAL')
O4 - HKUS\S-1-5-20\..\Run: [CTFMON.EXE] D:\WINDOWS\System32\CTFMON.EXE (User 'SERVICE RÉSEAU')
O4 - HKUS\S-1-5-18\..\Run: [CTFMON.EXE] D:\WINDOWS\System32\CTFMON.EXE (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [CTFMON.EXE] D:\WINDOWS\System32\CTFMON.EXE (User 'Default user')
O8 - Extra context menu item: &Tout télécharger avec FlashGet - D:\Program Files\FlashGet\jc_all.htm
O8 - Extra context menu item: &Télécharger avec FlashGet - D:\Program Files\FlashGet\jc_link.htm
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - D:\Program Files\Java\jre1.6.0_02\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - D:\Program Files\Java\jre1.6.0_02\bin\ssv.dll
O9 - Extra button: FlashGet - {D6E814A0-E0C5-11d4-8D29-0050BA6940E3} - D:\Program Files\FlashGet\FlashGet.exe
O9 - Extra 'Tools' menuitem: FlashGet - {D6E814A0-E0C5-11d4-8D29-0050BA6940E3} - D:\Program Files\FlashGet\FlashGet.exe
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - D:\Program Files\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - D:\Program Files\Messenger\msmsgs.exe
O16 - DPF: {512FC5A1-7DE1-43F1-BC0C-371622FCB409} (TotalScan Installer Class) - http://www.nanoscan.com/as/v1/cabs/ascstubie.cab
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - D:\PROGRA~1\FICHIE~1\Skype\SKYPE4~1.DLL
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - ALWIL Software - D:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: avast! Antivirus - ALWIL Software - D:\Program Files\Alwil Software\Avast4\ashServ.exe
O23 - Service: avast! Mail Scanner - ALWIL Software - D:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
O23 - Service: avast! Web Scanner - ALWIL Software - D:\Program Files\Alwil Software\Avast4\ashWebSv.exe
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - D:\WINDOWS\system32\nvsvc32.exe
O23 - Service: Service de lancement de WlanCfg (Wlancfg) - Inventel - D:\WINDOWS\wlancfg.exe

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End of file - 5717 bytes


Merci d'avance pour vos réponses.