Publicité intempestive =>log de highjack

Bonjour,
J'ai depuis 2 ou 3 selaines des publicités qui viennent régulièrement m'indisposer lorsque que j'ouvre IE !!!(Toujours les mêmes genres de publicités : porno, casino, system doctor...)
voici ma log de hignjack this:
J'ai passé ccleaner, spybot, adware...mais rien n'y change

Logfile of HijackThis v1.99.1
Scan saved at 15:45:00, on 19/06/2006
Platform: Windows 2000 SP4 (WinNT 5.00.2195)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

Running processes:
C:\WINNT\System32\smss.exe
C:\WINNT\system32\winlogon.exe
C:\WINNT\system32\services.exe
C:\WINNT\system32\lsass.exe
C:\WINNT\system32\svchost.exe
C:\WINNT\system32\spoolsv.exe
C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
C:\Program Files\Alwil Software\Avast4\ashServ.exe
C:\Program Files\Network Associates\VirusScan\Avsynmgr.exe
C:\WINNT\system32\drivers\CDAC11BA.EXE
C:\WINNT\SYSTEM32\DWRCS.EXE
C:\WINNT\System32\svchost.exe
C:\WINNT\system32\regsvc.exe
C:\WINNT\system32\MSTask.exe
C:\Program Files\CheckPoint\SecuRemote\bin\SR_WatchDog.exe
C:\WINNT\System32\WBEM\WinMgmt.exe
C:\Program Files\RealVNC\VNC4\WinVNC4.exe
C:\WINNT\system32\svchost.exe
C:\Program Files\Network Associates\VirusScan\VsStat.exe
C:\WINNT\Explorer.EXE
C:\Program Files\CheckPoint\SecuRemote\bin\SR_GUI.exe
C:\Program Files\CheckPoint\SecuRemote\bin\SR_Service.exe
C:\Program Files\Network Associates\VirusScan\Avconsol.exe
C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
C:\WINNT\system32\mobsync.exe
C:\WINNT\SOUNDMAN.EXE
C:\WINNT\system32\atiptaxx.exe
C:\Program Files\QuickTime\qttask.exe
C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe
C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
C:\Program Files\Java\jre1.5.0_06\bin\jusched.exe
D:\Program Files\Phone\Skype.exe
C:\Program Files\Kodak\KODAK Software Updater\7288971\Program\Kodak Software Updater.exe
C:\Program Files\Kodak\Kodak EasyShare software\bin\EasyShare.exe
C:\Lotus\Notes\NLNOTES.EXE
C:\Lotus\Notes\nhldaemn.EXE
C:\Program Files\Internet Explorer\IEXPLORE.EXE
C:\Program Files\Microsoft Office\Office\EXCEL.EXE
C:\Program Files\Internet Explorer\IEXPLORE.EXE
D:\REPERTOIRE TONY\doc tony\Z-exe\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://portail.free.fr/
R1 - HKCU\Software\Microsoft\Internet Connection Wizard,ShellNext = https://www.msn.com/fr-fr/
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = localhost
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O1 - Hosts: 172.16.6.249 web
O1 - Hosts: 144.144.102.3 KP1DANTE
O1 - Hosts: 144.144.102.1 KP1HAL
O1 - Hosts: 172.16.6.44 web400
O1 - Hosts: 172.16.6.236 Passerelle
O1 - Hosts: 172.16.6.236 issoire
O1 - Hosts: 172.16.6.236 bob
O1 - Hosts: 172.16.18.205 Passerelle
O1 - Hosts: 172.16.18.108 ecare.treves.fr
O1 - Hosts: 172.16.18.108 nemo.treves.fr
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.5.0_06\bin\ssv.dll
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - c:\program files\google\googletoolbar1.dll
O3 - Toolbar: @msdxmLC.dll,-1@1033,&Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINNT\System32\msdxm.ocx
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\program files\google\googletoolbar1.dll
O4 - HKLM\..\Run: [Synchronization Manager] mobsync.exe /logon
O4 - HKLM\..\Run: [SoundMan] SOUNDMAN.EXE
O4 - HKLM\..\Run: [ATIPTA] atiptaxx.exe
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Program Files\Java\jre1.5.0_06\bin\jusched.exe
O4 - HKCU\..\Run: [Skype] "D:\Program Files\Phone\Skype.exe" /nosplash /minimized
O4 - Global Startup: Adobe Gamma Loader.lnk = C:\Program Files\Fichiers communs\Adobe\Calibration\Adobe Gamma Loader.exe
O4 - Global Startup: Adobe Reader Speed Launch.lnk = C:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O4 - Global Startup: Kodak software updater.lnk = C:\Program Files\Kodak\KODAK Software Updater\7288971\Program\Kodak Software Updater.exe
O4 - Global Startup: Lancement rapide d'Adobe Reader.lnk = C:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O4 - Global Startup: Logiciel Kodak EasyShare.lnk = C:\Program Files\Kodak\Kodak EasyShare software\bin\EasyShare.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office\OSA9.EXE
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
O16 - DPF: {238F6F83-B8B4-11CF-8771-00A024541EE3} (Citrix ICA Client) - https://citrix.ouest.gfi.fr/ouest/cds/ICAWEB/fr/ica32/ica32t.exe
O16 - DPF: {56336BCB-3D8A-11D6-A00B-0050DA18DE71} - http://software-dl.real.com/236775ffbf45f28d4014/netzip/RdxIE601_fr.cab
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://update.microsoft.com/windowsupdate/v6/V5Controls/en/x86/client/wuweb_site....
O16 - DPF: {6DB731A3-B074-4118-8B1C-32511C65D836} (FotovistaPhotoUploader.ctrFpu) - http://www.mypixmania.com/tools/activex/fpu.cab
O17 - HKLM\System\CCS\Services\Tcpip\Parameters: Domain = ouest.gfi.fr
O17 - HKLM\System\CS1\Services\Tcpip\Parameters: Domain = ouest.gfi.fr
O17 - HKLM\System\CS2\Services\Tcpip\Parameters: Domain = ouest.gfi.fr
O20 - Winlogon Notify: ckpNotify - C:\WINNT\SYSTEM32\ckpNotify.dll
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - Unknown owner - C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: avast! Antivirus - Unknown owner - C:\Program Files\Alwil Software\Avast4\ashServ.exe
O23 - Service: avast! Mail Scanner - Unknown owner - C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe" /service (file missing)
O23 - Service: avast! Web Scanner - Unknown owner - C:\Program Files\Alwil Software\Avast4\ashWebSv.exe" /service (file missing)
O23 - Service: AVSync Manager (AvSynMgr) - Unknown owner - C:\Program Files\Network Associates\VirusScan\Avsynmgr.exe
O23 - Service: C-DillaCdaC11BA - Macrovision - C:\WINNT\system32\drivers\CDAC11BA.EXE
O23 - Service: Service d'administration du Gestionnaire de disque logique (dmadmin) - VERITAS Software Corp. - C:\WINNT\System32\dmadmin.exe
O23 - Service: DameWare Mini Remote Control (DWMRCS) - DameWare Development - C:\WINNT\SYSTEM32\DWRCS.EXE
O23 - Service: Kodak Camera Connection Software (KodakCCS) - Eastman Kodak Company - C:\WINNT\system32\drivers\KodakCCS.exe
O23 - Service: McShield - Unknown owner - C:\Program Files\Fichiers communs\Network Associates\McShield\Mcshield.exe
O23 - Service: Check Point SecuRemote Service (SR_Service) - Check Point Software Technologies - C:\Program Files\CheckPoint\SecuRemote\bin\SR_Service.exe
O23 - Service: Check Point SecuRemote WatchDog (SR_WatchDog) - Check Point Software Technologies - C:\Program Files\CheckPoint\SecuRemote\bin\SR_WatchDog.exe
O23 - Service: VNC Server Version 4 (WinVNC4) - Unknown owner - C:\Program Files\RealVNC\VNC4\WinVNC4.exe" -service (file missing)

Merci de votre aide