Publicité qui s'ouvrent sans cesse...

Bonjour,

Depuis quelques jours j'ai des fenêtres publicitaires qui s'ouyrent sans arrêt dans internet explorer avec un message qui apparaît dans le bas droit de mon écran qui dit: ad served by context tool. J'ai panda antivirus ainsi que d'autres logiciels antispyware. J'ai plusieurs scans avec presque toute les antivirus AVG, ad-adware, trojan remover, etc... et ils trouvent quelques fois des trojans et des spywares que je réussie à effacer mais cela ne règle jamais le problème, je peux vous dire que je ne sais plus quoi faire, je crois qu'il n'y a pas un programme antivirus ou antispyware ou adware que je n'ai pas essayé... Si il y a quelqu'un qui peut m'aider je vous serait reconnaissant.
Merci d'avance.
Voici le rapport Hijackthis:
Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 18:01:05, on 2007-10-22
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.6000.16544)
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:\Program Files\Windows Defender\MsMpEng.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\ehome\ehtray.exe
C:\WINDOWS\system32\hkcmd.exe
C:\WINDOWS\system32\igfxpers.exe
C:\Program Files\Java\jre1.6.0_02\bin\jusched.exe
C:\Program Files\Dell\Media Experience\DMXLauncher.exe
C:\WINDOWS\System32\DLA\DLACTRLW.EXE
C:\Program Files\Fichiers communs\InstallShield\UpdateService\issch.exe
C:\Program Files\Windows Defender\MSASCui.exe
C:\Program Files\ScanSoft\PaperPort\pptd40nt.exe
C:\Program Files\iTunes\iTunesHelper.exe
C:\Program Files\Nero\Nero 7\InCD\InCD.exe
C:\Program Files\Panda Software\Panda Antivirus 2007\APVXDWIN.EXE
C:\Program Files\Spyware Doctor\SDTrayApp.exe
C:\Program Files\SPYWAREfighter\spftray.exe
C:\Program Files\SPAMfighter\SFAgent.exe
C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\avgas.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\Digital Line Detect\DLG.exe
C:\Program Files\Webshots\webshots.scr
C:\Program Files\Fichiers communs\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\guard.exe
C:\WINDOWS\eHome\ehRecvr.exe
C:\WINDOWS\eHome\ehSched.exe
C:\WINDOWS\system32\imapi.exe
C:\Program Files\Nero\Nero 7\InCD\InCDsrv.exe
C:\Program Files\Fichiers communs\LightScribe\LSSrvc.exe
C:\Program Files\Fichiers communs\Microsoft Shared\VS7DEBUG\MDM.EXE
C:\Program Files\Panda Software\Panda Antivirus 2007\PsCtrls.exe
C:\Program Files\Panda Software\Panda Antivirus 2007\pavsrv51.exe
C:\Program Files\Panda Software\Panda Antivirus 2007\AVENGINE.EXE
C:\Program Files\Panda Software\Panda Antivirus 2007\psimsvc.exe
C:\Program Files\Spyware Doctor\svcntaux.exe
C:\Program Files\Spyware Doctor\swdsvc.exe
C:\Program Files\SPAMfighter\sfus.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\ehome\mcrdsvc.exe
C:\Program Files\SPYWAREfighter\spfprc.exe
C:\Program Files\iPod\bin\iPodService.exe
C:\WINDOWS\system32\dllhost.exe
C:\WINDOWS\System32\alg.exe
c:\program files\panda software\panda antivirus 2007\WebProxy.exe
C:\WINDOWS\eHome\ehmsas.exe
C:\WINDOWS\system32\wbem\wmiprvse.exe
C:\Program Files\MSN Messenger\usnsvc.exe
C:\Program Files\Lavasoft\Ad-Aware 2007\aawservice.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Documents and Settings\Stephanie\Local Settings\Application Data\Trend Micro\HCMS\checkup\en-US\checkup.exe
C:\Documents and Settings\Stephanie\Local Settings\Application Data\Trend Micro\HCMS\checkup\en-US\checkupsvc.exe
C:\Documents and Settings\Stephanie\Bureau\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.msn.com/fr-fr/?redirfallthru=http%3a%2f%2fsympatico.msn.ca%2fdefaultf.aspx%3f
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = https://www.msn.com/fr-fr/?ocid=iehp
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = https://www.bing.com/?toHttps=1&redig=5FC791212101479BAFBE1A679848B1AF
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 6.0\Reader\ActiveX\AcroIEHelper.dll
O2 - BHO: Media Holding Enterprises, LLC - {0D39A900-0F3A-4C29-A254-3E65244FDC34} - C:\Program Files\ContextTool\ContextTool-2.dll
O2 - BHO: DriveLetterAccess - {5CA3D70E-1895-11CF-8E15-001234567890} - C:\WINDOWS\System32\DLA\DLASHX_W.DLL
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.6.0_02\bin\ssv.dll
O2 - BHO: (no name) - {7E853D72-626A-48EC-A868-BA8D5E23E045} - (no file)
O2 - BHO: Windows Live Sign-in Helper - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files\Fichiers communs\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O4 - HKLM\..\Run: [ehTray] C:\WINDOWS\ehome\ehtray.exe
O4 - HKLM\..\Run: [igfxtray] C:\WINDOWS\system32\igfxtray.exe
O4 - HKLM\..\Run: [igfxhkcmd] C:\WINDOWS\system32\hkcmd.exe
O4 - HKLM\..\Run: [igfxpers] C:\WINDOWS\system32\igfxpers.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre1.6.0_02\bin\jusched.exe"
O4 - HKLM\..\Run: [DMXLauncher] "C:\Program Files\Dell\Media Experience\DMXLauncher.exe"
O4 - HKLM\..\Run: [DLA] C:\WINDOWS\System32\DLA\DLACTRLW.EXE
O4 - HKLM\..\Run: [ISUSPM Startup] "C:\PROGRA~1\FICHIE~1\INSTAL~1\UPDATE~1\ISUSPM.exe" -startup
O4 - HKLM\..\Run: [ISUSScheduler] "C:\Program Files\Fichiers communs\InstallShield\UpdateService\issch.exe" -start
O4 - HKLM\..\Run: [Windows Defender] "C:\Program Files\Windows Defender\MSASCui.exe" -hide
O4 - HKLM\..\Run: [SSBkgdUpdate] "C:\Program Files\Fichiers communs\Scansoft Shared\SSBkgdUpdate\SSBkgdupdate.exe" -Embedding -boot
O4 - HKLM\..\Run: [PaperPort PTD] "C:\Program Files\ScanSoft\PaperPort\pptd40nt.exe"
O4 - HKLM\..\Run: [IndexSearch] "C:\Program Files\ScanSoft\PaperPort\IndexSearch.exe"
O4 - HKLM\..\Run: [BrMfcWnd] "C:\Program Files\Brother\Brmfcmon\BrMfcWnd.exe" /AUTORUN
O4 - HKLM\..\Run: [SetDefPrt] "C:\Program Files\Brother\Brmfl06a\BrStDvPt.exe"
O4 - HKLM\..\Run: [ControlCenter3] "C:\Program Files\Brother\ControlCenter3\brctrcen.exe" /autorun
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: [NeroFilterCheck] "C:\Program Files\Fichiers communs\Ahead\Lib\NeroCheck.exe"
O4 - HKLM\..\Run: [InCD] "C:\Program Files\Nero\Nero 7\InCD\InCD.exe"
O4 - HKLM\..\Run: [LanzarL2007] "C:\DOCUME~1\STEPHA~1\LOCALS~1\Temp\{38CF6F9C-2DF9-4AB7-9353-1B2FDE82207F}\{D1DA2BA7-2592-4036-9BB2-DCCABDE8DC1A}\..\..\L2007tmp\Setup.exe" /SETUP:"/l0x040c"
O4 - HKLM\..\Run: [APVXDWIN] "C:\Program Files\Panda Software\Panda Antivirus 2007\APVXDWIN.EXE" /s
O4 - HKLM\..\Run: [SDTray] "C:\Program Files\Spyware Doctor\SDTrayApp.exe"
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [TrojanScanner] "C:\Program Files\Trojan Remover\Trjscan.exe"
O4 - HKLM\..\Run: [spywarefighterguard] C:\Program Files\SPYWAREfighter\spftray.exe
O4 - HKLM\..\Run: [SPAMfighter Agent] "C:\Program Files\SPAMfighter\SFAgent.exe" update delay 60
O4 - HKLM\..\Run: [!AVG Anti-Spyware] "C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\avgas.exe" /minimized
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
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 - Startup: Webshots.lnk = C:\Program Files\Webshots\Launcher.exe
O4 - Global Startup: Digital Line Detect.lnk = ?
O8 - Extra context menu item: Add to Windows &Live Favorites - https://onedrive.live.com/?id=favorites
O8 - Extra context menu item: Download with YouTube Video Converter - C:\Program Files\Xilisoft\YouTube Video Converter\upod_link.HTM
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
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: Recherche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
O16 - DPF: {01A88BB1-1174-41EC-ACCB-963509EAE56B} (SysProWmi Class) - http://support.dell.com/systemprofiler/SysPro.CAB
O16 - DPF: {0EB0E74A-2A76-4AB3-A7FB-9BD8C29F7F75} (CKAVWebScan Object) - https://www.kaspersky.fr/?domain=webscanner.kaspersky.fr
O16 - DPF: {17492023-C23A-453E-A040-C7C580BBF700} (Windows Genuine Advantage Validation Tool) - http://download.microsoft.com/download/E/5/6/E5611B10-0D6D-4117-8430-A67417AA88CD/LegitCheckControl.cab
O16 - DPF: {193C772A-87BE-4B19-A7BB-445B226FE9A1} (ewidoOnlineScan Control) - http://downloads.ewido.net/ewidoOnlineScan.cab
O16 - DPF: {1EF9F042-C2EB-4293-8213-474CAEEF531D} (TmHcmsX Control) - http://www.trendsecure.com/framework/control/en-US/activex/TmHcmsX.CAB
O16 - DPF: {2BC66F54-93A8-11D3-BEB6-00105AA9B6AE} (Symantec AntiVirus scanner) - http://security.symantec.com/sscv6/SharedContent/vc/bin/AvSniff.cab
O16 - DPF: {4ED9DDF0-7479-4BBE-9335-5A1EDB1D8A21} - http://download.mcafee.com/molbin/shared/mcinsctl/4,0,0,101/mcinsctl.cab
O16 - DPF: {4F1E5B1A-2A80-42CA-8532-2D05CB959537} (MSN Photo Upload Tool) - http://stephaniegrenier.spaces.live.com//PhotoUpload/MsnPUpld.cab
O16 - DPF: {56393399-041A-4650-94C7-13DFCB1F4665} (PSFormX Control) - http://www.ca.com/us/securityadvisor/pestscan/pestscan.cab
O16 - DPF: {5D86DDB5-BDF9-441B-9E9E-D4730F4EE499} (BDSCANONLINE Control) - http://www.bitdefender.fr/scan8/oscan8.cab
O16 - DPF: {644E432F-49D3-41A1-8DD5-E099162EEEC5} (Symantec RuFSI Utility Class) - http://security.symantec.com/sscv6/SharedContent/common/bin/cabsa.cab
O16 - DPF: {6CEC0297-FAFB-41FB-97EA-77E3081B1DFE} (Seleccion Class) - https://www.pandasecurity.com/en/homeusers/online-antivirus/?ref=activescan
O16 - DPF: {74D05D43-3236-11D4-BDCD-00C04F9A3B61} (HouseCall Control) - https://www.trendmicro.com/en_us/forHome/products/housecall.html
O16 - DPF: {7B297BFD-85E4-4092-B2AF-16A91B2EA103} (WScanCtl Class) - http://www.ca.com/us/securityadvisor/virusinfo/webscan.cab
O16 - DPF: {80DD2229-B8E4-4C77-B72F-F22972D723EA} - http://www.inoculer.com/antivirus/Msie/bitdefender.cab
O16 - DPF: {9A9307A0-7DA4-4DAF-B042-5009F29E09E1} (ActiveScan Installer Class) - http://acs.pandasoftware.com/activescan/as5free/asinst.cab
O16 - DPF: {BB21F850-63F4-4EC9-BF9D-565BD30C9AE9} (a-squared Scanner) - http://ax.emsisoft.com/asquared.cab
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://fpdownload2.macromedia.com/get/shockwave/cabs/flash/swflash.cab
O16 - DPF: {E856B973-45FD-4559-8F82-EAB539144667} (Dell PC Checkup Installer Control) - http://pccheckup.dellfix.com/rel/41/install/gtdownde.cab
O16 - DPF: {EF791A6B-FC12-4C68-99EF-FB9E207A39E6} (McFreeScan Class) - http://download.mcafee.com/molbin/iss-loc/mcfscan/2,2,0,5145/mcfscan.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{F3848BFB-459D-4F23-8CAF-FC016DE38657}: NameServer = 67.69.184.75 67.69.184.212
O23 - Service: Ad-Aware 2007 Service (aawservice) - Lavasoft AB - C:\Program Files\Lavasoft\Ad-Aware 2007\aawservice.exe
O23 - Service: Apple Mobile Device - Apple, Inc. - C:\Program Files\Fichiers communs\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
O23 - Service: AVG Anti-Spyware Guard - GRISOFT s.r.o. - C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\guard.exe
O23 - Service: InCD Helper (InCDsrv) - Nero AG - C:\Program Files\Nero\Nero 7\InCD\InCDsrv.exe
O23 - Service: Service de l'iPod (iPod Service) - Apple Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: LightScribeService Direct Disc Labeling Service (LightScribeService) - Unknown owner - C:\Program Files\Fichiers communs\LightScribe\LSSrvc.exe
O23 - Service: NBService - Nero AG - C:\Program Files\Nero\Nero 7\Nero BackItUp\NBService.exe
O23 - Service: Intel NCS NetService (NetSvc) - Intel(R) Corporation - C:\Program Files\Intel\PROSetWired\NCS\Sync\NetSvc.exe
O23 - Service: Panda Software Controller - Panda Software International - C:\Program Files\Panda Software\Panda Antivirus 2007\PsCtrls.exe
O23 - Service: Panda anti-virus service (PAVSRV) - Panda Software International - C:\Program Files\Panda Software\Panda Antivirus 2007\pavsrv51.exe
O23 - Service: Panda IManager Service (PSIMSVC) - Panda Software International - C:\Program Files\Panda Software\Panda Antivirus 2007\psimsvc.exe
O23 - Service: PC Tools Auxiliary Service (sdAuxService) - PC Tools - C:\Program Files\Spyware Doctor\svcntaux.exe
O23 - Service: PC Tools Security Service (sdCoreService) - PC Tools - C:\Program Files\Spyware Doctor\swdsvc.exe
O23 - Service: SPAMfighter Update Service - SPAMfighter ApS - C:\Program Files\SPAMfighter\sfus.exe
O23 - Service: SPYWAREfighterRP - SpamFighter APS - C:\Program Files\SPYWAREfighter\spfprc.exe