Problème de lenteur internet et pc ram

Bonjour

Je trouve ma connexion internet lente et le fonctionnement de mon pc ralenti depuis plusieurs jours.
Est ce que quelqu'un pourrais m'aider?
J'ai essayer un scan avec mebroot spy sweeper et fais un scan avec kaspersky de mon pc mais le resultat est toujours le meme le pc semble lent.
Pour faciliter la réponse je vous joint le rapport de hijackthis

En vous remerciant

Logfile of HijackThis v1.99.1
Scan saved at 00:24:17, on 13/11/2006
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

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\Ati2evxx.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\WIDCOMM\Bluetooth Software\bin\btwdins.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Analog Devices\SoundMAX\SMAgent.exe
C:\WINDOWS\system32\UAService7.exe
C:\Program Files\Webroot\Spy Sweeper\SpySweeper.exe
C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
C:\Program Files\Java\jre1.5.0_06\bin\jusched.exe
C:\Program Files\Analog Devices\SoundMAX\smax4.exe
D:\Program Files\pspvideo9\pspVideo9.exe
D:\Program Files\QuickTime\qttask.exe
C:\Program Files\iTunes\iTunesHelper.exe
C:\Program Files\Webroot\Spy Sweeper\SpySweeperUI.exe
C:\Program Files\MSN Messenger\MsnMsgr.Exe
C:\Program Files\Fichiers communs\Ahead\lib\NMBgMonitor.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\WIDCOMM\Bluetooth Software\BTTray.exe
C:\Program Files\iPod\bin\iPodService.exe
C:\PROGRA~1\WIDCOMM\BLUETO~1\BTSTAC~1.EXE
D:\Program Files\BitTorrent\bittorrent.exe
C:\WINDOWS\system32\svchost.exe
C:\Program Files\Webroot\Spy Sweeper\SSU.EXE
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Program Files\Nero\Nero 7\Nero StartSmart\NeroStartSmart.exe
C:\Program Files\Nero\Nero 7\Core\nero.exe
C:\WINDOWS\system32\imapi.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Documents and Settings\michel\Bureau\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.free.fr
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://www.free.fr
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.free.fr
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.5.0_06\bin\ssv.dll
O4 - HKLM\..\Run: [ATIPTA] "C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe"
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre1.5.0_06\bin\jusched.exe"
O4 - HKLM\..\Run: [OfficeGuard RegChecker] "C:\Program Files\Kaspersky Lab\Kaspersky Anti-Virus Personal Pro\ogrc.exe"
O4 - HKLM\..\Run: [NeroFilterCheck] c:\windows\system32\nerocheck.exe
O4 - HKLM\..\Run: [SoundMax] "C:\Program Files\Analog Devices\SoundMAX\smax4.exe" /tray
O4 - HKLM\..\Run: [PSPVideo9] "d:\Program Files\pspvideo9\pspVideo9.exe" -t
O4 - HKLM\..\Run: [QuickTime Task] "D:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [iTunesHelper] "C:\Program Files\iTunes\iTunesHelper.exe"
O4 - HKLM\..\Run: [KAVPersonal50] "d:\Program Files\Kaspersky Lab\Kaspersky Anti-Virus Personal Pro\kav.exe" /minimize
O4 - HKLM\..\Run: [SpySweeper] "C:\Program Files\Webroot\Spy Sweeper\SpySweeperUI.exe" /startintray
O4 - HKCU\..\Run: [MsnMsgr] "C:\Program Files\MSN Messenger\MsnMsgr.Exe" /background
O4 - HKCU\..\Run: [BgMonitor_{79662E04-7C6C-4d9f-84C7-88D8A56B10AA}] "C:\Program Files\Fichiers communs\Ahead\lib\NMBgMonitor.exe"
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [BitTorrent] "D:\Program Files\BitTorrent\bittorrent.exe" --force_start_minimized
O4 - Startup: BitTorrent.lnk = D:\Program Files\BitTorrent\bittorrent.exe
O4 - Global Startup: BTTray.lnk = ?
O4 - Global Startup: Lancement rapide d'Adobe Reader.lnk = D:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.exe
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: Send To &Bluetooth - C:\Program Files\WIDCOMM\Bluetooth Software\btsendto_ie_ctx.htm
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_06\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_06\bin\ssv.dll
O9 - Extra button: Recherche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
O9 - Extra button: @btrez.dll,-4015 - {CCA281CA-C863-46ef-9331-5C8D4460577F} - C:\Program Files\WIDCOMM\Bluetooth Software\btsendto_ie.htm
O9 - Extra 'Tools' menuitem: @btrez.dll,-4017 - {CCA281CA-C863-46ef-9331-5C8D4460577F} - C:\Program Files\WIDCOMM\Bluetooth Software\btsendto_ie.htm
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: {09C21411-B9A2-4DE6-8416-4E3B58577BE0} (France Telecom MDM ActiveX Control) - http://minitelweb.minitel.com/imin_data/ocx/MDM.cab
O16 - DPF: {205FF73B-CA67-11D5-99DD-444553540006} (CInstall Class) - http://www.errorguard.com/installation/Install.cab
O16 - DPF: {4F1E5B1A-2A80-42CA-8532-2D05CB959537} (MSN Photo Upload Tool) - http://by20fd.bay20.hotmail.msn.com/resources/MsnPUpld.cab
O16 - DPF: {639658F3-B141-4D6B-B936-226F75A5EAC3} (CPlayFirstDinerDash2Control Object) - http://webgames.d.tmsrv.com/...
O16 - DPF: {74D05D43-3236-11D4-BDCD-00C04F9A3B61} (HouseCall Control) - http://a936.g.akamai.net/...
O16 - DPF: {B38870E4-7ECB-40DA-8C6A-595F0A5519FF} (MsnMessengerSetupDownloadControl Class) - http://messenger.msn.com/download/MsnMessengerSetupDownloader.cab
O18 - Protocol: livecall - {828030A1-22C1-4009-854F-8E305202313F} - C:\PROGRA~1\MSNMES~1\MSGRAP~1.DLL
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - C:\PROGRA~1\MSNMES~1\MSGRAP~1.DLL
O20 - Winlogon Notify: WgaLogon - C:\WINDOWS\SYSTEM32\WgaLogon.dll
O20 - Winlogon Notify: WRNotifier - C:\WINDOWS\SYSTEM32\WRLogonNTF.dll
O23 - Service: Ati HotKey Poller - ATI Technologies Inc. - C:\WINDOWS\system32\Ati2evxx.exe
O23 - Service: ATI Smart - Unknown owner - C:\WINDOWS\system32\ati2sgag.exe
O23 - Service: Bluetooth Service (btwdins) - WIDCOMM, Inc. - C:\Program Files\WIDCOMM\Bluetooth Software\bin\btwdins.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Fichiers communs\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: iPod Service - Apple Computer, Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: Kaspersky Anti-Virus Service (kavsvc) - Kaspersky Lab - d:\Program Files\Kaspersky Lab\Kaspersky Anti-Virus Personal Pro\kavsvc.exe
O23 - Service: PACSPTISVR - Sony Corporation - C:\Program Files\Fichiers communs\Sony Shared\AVLib\PACSPTISVR.exe
O23 - Service: SoundMAX Agent Service (SoundMAX Agent Service (default)) - Analog Devices, Inc. - C:\Program Files\Analog Devices\SoundMAX\SMAgent.exe
O23 - Service: Sony SPTI Service (SPTISRV) - Sony Corporation - C:\Program Files\Fichiers communs\Sony Shared\AVLib\SPTISRV.exe
O23 - Service: SecuROM User Access Service (V7) (UserAccess7) - Unknown owner - C:\WINDOWS\system32\UAService7.exe
O23 - Service: Moteur Webroot Spy Sweeper (WebrootSpySweeperService) - Webroot Software, Inc. - C:\Program Files\Webroot\Spy Sweeper\SpySweeper.exe