Ordinateur lent

Bonjour,les fichiers sur mon ordi s'affichent tres lentement sur l'ecran.Et quand je clique sur la croix rouge ne disparaissent pas de suite et par moment d'une maniere bizarre du haut vers le bas et les icones du bureau disparaissent en meme temps je vous joint le rapport Hijackthis.
antivirus:avaast et adware se pro
merci
Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 13:57:10, on 18/04/2009
Platform: Windows XP SP3 (WinNT 5.01.2600)
MSIE: Internet Explorer v8.00 (8.00.6001.18702)
Boot mode: Normal

Running processes:
H:\WINXP\System32\smss.exe
H:\WINXP\system32\winlogon.exe
H:\WINXP\system32\services.exe
H:\WINXP\system32\lsass.exe
H:\WINXP\system32\svchost.exe
H:\Program Files\Windows Defender\MsMpEng.exe
H:\WINXP\System32\svchost.exe
H:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
H:\Program Files\Alwil Software\Avast4\ashServ.exe
H:\WINXP\Explorer.EXE
H:\WINXP\system32\spoolsv.exe
H:\WINXP\SOUNDMAN.EXE
H:\WINXP\system32\VTTimer.exe
H:\WINXP\system32\VTtrayp.exe
H:\Program Files\CyberLink\PowerDVD\PDVDServ.exe
H:\WINXP\PixArt\PAC207\Monitor.exe
H:\WINXP\System32\spool\DRIVERS\W32X86\3\E_S4I091.EXE
H:\Program Files\Windows Defender\MSASCui.exe
H:\Program Files\QuickTime\qttask.exe
H:\PROGRA~1\Alwil Software\Avast4\ashDisp.exe
H:\Program Files\Java\jre6\bin\jusched.exe
H:\WINXP\system32\ctfmon.exe
H:\Program Files\Java\jre6\bin\jqs.exe
H:\Program Files\Cegetel\C-BOX\Wizard\QuickAccess.exe
H:\Program Files\Microsoft LifeCam\MSCamS32.exe
H:\Program Files\CDBurnerXP\NMSAccess.exe
H:\WINXP\system32\svchost.exe
H:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
H:\Program Files\Alwil Software\Avast4\ashWebSv.exe
H:\Program Files\Mozilla Firefox\firefox.exe
H:\Program Files\Trend Micro\HijackThis\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.cegetelportail.fr/
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
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
R3 - URLSearchHook: SweetIM ToolbarURLSearchHook Class - {EEE6C35D-6118-11DC-9C72-001320C79847} - H:\Program Files\SweetIM\Toolbars\Internet Explorer\mgHelper.dll
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - H:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: (no name) - {5C255C8A-E604-49b4-9D64-90988571CECB} - (no file)
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - H:\Program Files\Java\jre6\bin\ssv.dll
O2 - BHO: Programme d'aide de l'Assistant de connexion Windows Live - {9030D464-4C02-4ABF-8ECC-5164760863C6} - H:\Program Files\Fichiers communs\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: Google Toolbar Notifier BHO - {AF69DE43-7D58-4638-B6FA-CE66B5AD205D} - H:\Program Files\Google\GoogleToolbarNotifier\5.1.1309.3572\swg.dll
O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - H:\Program Files\Java\jre6\bin\jp2ssv.dll
O2 - BHO: JQSIEStartDetectorImpl - {E7E6F031-17CE-4C07-BC86-EABFE594F69C} - H:\Program Files\Java\jre6\lib\deploy\jqs\ie\jqs_plugin.dll
O2 - BHO: EpsonToolBandKicker Class - {E99421FB-68DD-40F0-B4AC-B7027CAE2F1A} - H:\Program Files\EPSON\EPSON Web-To-Page\EPSON Web-To-Page.dll
O2 - BHO: SWEETIE - {EEE6C35C-6118-11DC-9C72-001320C79847} - H:\Program Files\SweetIM\Toolbars\Internet Explorer\mgToolbarIE.dll
O3 - Toolbar: EPSON Web-To-Page - {EE5D279F-081B-4404-994D-C6B60AAEBA6D} - H:\Program Files\EPSON\EPSON Web-To-Page\EPSON Web-To-Page.dll
O3 - Toolbar: SweetIM Toolbar for Internet Explorer - {EEE6C35B-6118-11DC-9C72-001320C79847} - H:\Program Files\SweetIM\Toolbars\Internet Explorer\mgToolbarIE.dll
O4 - HKLM\..\Run: [SoundMan] SOUNDMAN.EXE
O4 - HKLM\..\Run: [VTTimer] VTTimer.exe
O4 - HKLM\..\Run: [VTTrayp] VTtrayp.exe
O4 - HKLM\..\Run: [LanguageShortcut] "H:\Program Files\CyberLink\PowerDVD\Language\Language.exe"
O4 - HKLM\..\Run: [RemoteControl] "H:\Program Files\CyberLink\PowerDVD\PDVDServ.exe"
O4 - HKLM\..\Run: [Monitor] H:\WINXP\PixArt\PAC207\Monitor.exe
O4 - HKLM\..\Run: [EPSON Stylus C48 Series] H:\WINXP\System32\spool\DRIVERS\W32X86\3\E_S4I091.EXE /P23 "EPSON Stylus C48 Series" /O6 "USB001" /M "Stylus C48"
O4 - HKLM\..\Run: [Windows Defender] "H:\Program Files\Windows Defender\MSASCui.exe" -hide
O4 - HKLM\..\Run: [QuickTime Task] "H:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [avast!] H:\PROGRA~1\Alwil Software\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] "H:\Program Files\Java\jre6\bin\jusched.exe"
O4 - HKCU\..\Run: [ctfmon.exe] H:\WINXP\system32\ctfmon.exe
O4 - HKCU\..\Run: [Configuration de la C-BOX] H:\Program Files\Cegetel\C-BOX\Wizard\QuickAccess.exe
O4 - Global Startup: Lancement rapide d'Adobe Reader.lnk = C:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O8 - Extra context menu item: Add to Google Photos Screensa&ver - res://H:\WINXP\system32\GPhotos.scr/200
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - H:\Program Files\Java\jre6\bin\jp2iexp.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - H:\Program Files\Java\jre6\bin\jp2iexp.dll
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - H:\WINXP\Network Diagnostic\xpnetdiag.exe
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - H:\WINXP\Network Diagnostic\xpnetdiag.exe
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - H:\Program Files\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - H:\Program Files\Messenger\msmsgs.exe
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://fpdownload2.macromedia.com/get/shockwave/cabs/flash/swflash.cab
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - ALWIL Software - H:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: avast! Antivirus - ALWIL Software - H:\Program Files\Alwil Software\Avast4\ashServ.exe
O23 - Service: avast! Mail Scanner - ALWIL Software - H:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
O23 - Service: avast! Web Scanner - ALWIL Software - H:\Program Files\Alwil Software\Avast4\ashWebSv.exe
O23 - Service: Google Software Updater (gusvc) - Google - H:\Program Files\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: Java Quick Starter (JavaQuickStarterService) - Sun Microsystems, Inc. - H:\Program Files\Java\jre6\bin\jqs.exe
O23 - Service: NMSAccess - Unknown owner - H:\Program Files\CDBurnerXP\NMSAccess.exe
O23 - Service: Cyberlink RichVideo Service(CRVS) (RichVideo) - Unknown owner - C:\Program Files\CyberLink\Shared files\RichVideo.exe (file missing)