Mon ordi se traine de plus en plus et se bloq

bonjour, probleme courant je crois : depuis quelques jours mon ordi est lent surtout apres une journée dd'utilisation. Mon fils va sur Dofus et MSN on charge des videos sur wanadoo bref tout roule mais à une vitesse d'escargot. J'ai installé controlkids car des fenetres indésirables ne font que s'ouvrir depuis ça va mieux mais c'est encore plus lent. Parfois impossoble de faire ctrl+alt+sup pour nettoyer les trucs qui veulent pas s'éteindre comme orangeplayer, ipod, itunes, msn etc. Voici ce que donne hijackthis :

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 22:24:44, on 04/09/2007
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)
Boot mode: Normal

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\csrss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
C:\Program Files\Alwil Software\Avast4\ashServ.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\System32\nvsvc32.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
C:\WINDOWS\System32\alg.exe
C:\WINDOWS\System32\DSentry.exe
C:\Program Files\Roxio\Easy CD Creator 5\DirectCD\DirectCD.exe
C:\PROGRA~1\MI948F~1\GAMECO~1\Common\SWTrayV4.exe
C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe
C:\Program Files\Adobe\Photoshop Album Edition Découverte\3.0\Apps\apdproxy.exe
C:\WINDOWS\System32\LVCOMSX.EXE
C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
C:\Program Files\Java\jre1.6.0_02\bin\jusched.exe
C:\Program Files\Logitech\Video\LogiTray.exe
C:\Program Files\QuickTime\qttask.exe
C:\Program Files\Common Files\CalCheck.exe
C:\Program Files\Logitech\Video\FxSvr2.exe
C:\Program Files\Control Kids\Control Kids.exe
C:\Program Files\Internet Explorer\IEXPLORE.EXE
C:\Program Files\Fichiers communs\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
C:\Documents and Settings\Laurent\Local Settings\Temporary Internet Files\Content.IE5\A5OLSL4V\HiJackThis[1]\HijackThis.exe
C:\WINDOWS\System32\wbem\wmiprvse.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.google.fr/?gws_rd=ssl
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = localhost
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
R3 - URLSearchHook: (no name) - {926A08FA-F5EE-00C0-96E4-28FAF4838C35} - ssweeper.dll (file missing)
O2 - BHO: Adobe PDF Reader Link Helper - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: (no name) - {60491248-2710-640B-11C0-B9F5FF2F93F4} - C:\DOCUME~1\MARGOT\APPLIC~1\MEALFI~1\holeskip.exe (file missing)
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.6.0_02\bin\ssv.dll
O2 - BHO: (no name) - {FCADDC14-BD46-408A-9842-CDBE1C6D37EB} - C:\PROGRA~1\CONTRO~1\zeropop.dll
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\System32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [DVDSentry] C:\WINDOWS\System32\DSentry.exe
O4 - HKLM\..\Run: [AdaptecDirectCD] "C:\Program Files\Roxio\Easy CD Creator 5\DirectCD\DirectCD.exe"
O4 - HKLM\..\Run: [SideWinderTrayV4] C:\PROGRA~1\MI948F~1\GAMECO~1\Common\SWTrayV4.exe
O4 - HKLM\..\Run: [VideoManager] C:\Program Files\Video Manager\VideoManager.exe /iconic
O4 - HKLM\..\Run: [AVWUpd32] "C:\PROGRA~1\AVWin\Avwupd32.EXE" /min
O4 - HKLM\..\Run: [MessengerPlus3] "C:\Program Files\MessengerPlus! 3\MsgPlus.exe"
O4 - HKLM\..\Run: [AVGCtrl] C:\Program Files\AVWin\AVGNT.EXE /min
O4 - HKLM\..\Run: [prcmon] iesetupdll.exe
O4 - HKLM\..\Run: [syspanel] cnftips.exe
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [dmsyp.exe] C:\WINDOWS\System32\dmsyp.exe
O4 - HKLM\..\Run: [ljimbhcqwr] c:\windows\system32\ljimbhcqwr.exe -start
O4 - HKLM\..\Run: [Adobe Photo Downloader] "C:\Program Files\Adobe\Photoshop Album Edition Découverte\3.0\Apps\apdproxy.exe"
O4 - HKLM\..\Run: [LVCOMSX] C:\WINDOWS\System32\LVCOMSX.EXE
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [OrangePlayer] c:\program files\orange\player orange\Player Orange.exe /systray
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre1.6.0_02\bin\jusched.exe"
O4 - HKLM\..\Run: [LogitechVideoRepair] C:\Program Files\Logitech\Video\ISStart.exe
O4 - HKLM\..\Run: [LogitechVideoTray] C:\Program Files\Logitech\Video\LogiTray.exe
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [iTunesHelper] "C:\Program Files\iTunes\iTunesHelper.exe"
O4 - HKLM\..\Run: [Control Kids] C:\Program Files\Control Kids\Control kids.exe
O4 - HKCU\..\Run: [MessengerPlus3] "C:\Program Files\MessengerPlus! 3\MsgPlus.exe" /WinStart
O4 - HKCU\..\Run: [driver32] systemdll.exe
O4 - HKCU\..\Run: [progmen] Testimonials.exe
O4 - HKCU\..\Run: [AnyDVD] C:\Program Files\SlySoft\AnyDVD\AnyDVD.exe
O4 - HKCU\..\Run: [LogitechSoftwareUpdate] "C:\Program Files\Logitech\Video\ManifestEngine.exe" boot
O4 - HKCU\..\Run: [OrangePlayer] c:\program files\orange\player orange\Orange Player.exe /systray
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 - Global Startup: Contrôleur de calendrier Ulead.lnk = C:\Program Files\Common Files\CalCheck.exe
O4 - Global Startup: Lancement rapide d'Adobe Reader.lnk = C:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O4 - Global Startup: Player Orange.lnk = C:\Program Files\Orange\Player Orange\Player Orange.exe
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_02\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_02\bin\ssv.dll
O9 - Extra button: Real.com - {CD67F990-D8E9-11d2-98FE-00C0F0318AFE} - C:\WINDOWS\System32\Shdocvw.dll
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: {2BC66F54-93A8-11D3-BEB6-00105AA9B6AE} (Symantec AntiVirus scanner) - http://security.symantec.com/sscv6/SharedContent/vc/bin/AvSniff.cab
O16 - DPF: {644E432F-49D3-41A1-8DD5-E099162EEEC5} (Symantec RuFSI Utility Class) - http://security.symantec.com/sscv6/SharedContent/common/bin/cabsa.cab
O16 - DPF: {87AF076E-D86D-4E87-ADDD-F05804E1F150} (VirginMega DownloadManager) - https://www.virginmega.fr/DownloadManager/Release/Prod/DownMan.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{0A64B1FB-13DC-4639-95EE-8994EEC7085E}: NameServer = 69.50.176.158,85.255.112.8
O17 - HKLM\System\CCS\Services\Tcpip\..\{2AB07987-D5F5-41B3-9ED9-A070C5FE6A30}: NameServer = 69.50.176.158,85.255.112.8
O17 - HKLM\System\CCS\Services\Tcpip\..\{415BAA56-BF70-4D9E-8A69-43AA26700588}: NameServer = 69.50.176.158,85.255.112.8
O17 - HKLM\System\CCS\Services\Tcpip\..\{9F12A553-AE96-4D12-9CFD-96FBE7288262}: NameServer = 69.50.176.158,85.255.112.8
O17 - HKLM\System\CCS\Services\Tcpip\..\{C2296DD4-1374-4BF0-B3D2-BB775644868C}: NameServer = 69.50.176.158,85.255.112.8
O17 - HKLM\System\CCS\Services\Tcpip\..\{E5EBB23B-E7BE-4CEF-A434-EC4CE59FF70C}: NameServer = 69.50.176.158,85.255.112.8
O17 - HKLM\System\CS1\Services\Tcpip\..\{0A64B1FB-13DC-4639-95EE-8994EEC7085E}: NameServer = 69.50.176.158,85.255.112.8
O18 - Filter hijack: text/html - {C6F62B7A-5450-4A2F-8687-6CEEC3AEB055} - C:\WINDOWS\system32\controlkids2.dll
O23 - Service: AntiVir Mail Security Service (AntiVirMailService) - Unknown owner - C:\Program Files\AVWin\AVMAILC.EXE (file missing)
O23 - Service: AntiVir Service (AntiVirService) - Unknown owner - C:\Program Files\AVWin\AVGUARD.EXE (file missing)
O23 - Service: Apple Mobile Device - Apple, Inc. - C:\Program Files\Fichiers communs\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - ALWIL Software - C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: avast! Antivirus - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashServ.exe
O23 - Service: avast! Mail Scanner - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
O23 - Service: avast! Web Scanner - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
O23 - Service: AVE Service (AVEService) - Unknown owner - C:\Program Files\AVWin\AVESVC.EXE (file missing)
O23 - Service: AntiVir Update (AVWUpSrv) - Unknown owner - C:\Program Files\AVWin\AVWUPSRV.EXE (file missing)
O23 - Service: F-Secure Windows Security Center Legacy Detection Service (Fswsclds) - Unknown owner - C:\Program Files\Securitoo\av_fw\fswsclds.exe (file missing)
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: Intel NCS NetService (NetSvc) - Intel(R) Corporation - C:\Program Files\Intel\NCS\Sync\NetSvc.exe
O23 - Service: NVIDIA Driver Helper Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\System32\nvsvc32.exe