Bonjour,
J'ai réinstallé complétement le système y compris les mises à jour Microsoft, Sp1 et programmes.
Je précise qu'un bon nombre de logiciels furent abandonnés quand on sait qu'ils n'apportent plus de mal que de bien
Quant à la sécurité, je me permets d'exposer un rapport HijackThis afin d'être analyser.
Je suis les recommandations et tiens à vous remercier d'avance.

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 08:54:41, on 01/08/2008
Platform: Windows Vista SP1 (WinNT 6.00.1905)
MSIE: Internet Explorer v7.00 (7.00.6001.18000)
Boot mode: Normal

Running processes:
C:\Windows\system32\taskeng.exe
C:\Windows\system32\Dwm.exe
C:\Windows\Explorer.EXE
C:\Program Files\Windows Defender\MSASCui.exe
C:\Acer\Empowering Technology\eAudio\eAudio.exe
C:\Program Files\SiteAdvisor\6261\SiteAdv.exe
C:\Program Files\Launch Manager\LManager.exe
C:\Windows\RtHDVCpl.exe
C:\Program Files\Windows Sidebar\sidebar.exe
C:\Windows\ehome\ehtray.exe
C:\Windows\System32\rundll32.exe
C:\Windows\ehome\ehmsas.exe
C:\Acer\Empowering Technology\ENET\ENMTRAY.EXE
C:\Acer\Empowering Technology\EPOWER\EPOWER_DMC.EXE
C:\Users\CHRIST~1\AppData\Local\Temp\RtkBtMnt.exe
C:\Acer\Empowering Technology\ACER.EMPOWERING.FRAMEWORK.SUPERVISOR.EXE
C:\Acer\Empowering Technology\eRecovery\ERAGENT.EXE
C:\Program Files\Trend Micro\HijackThis\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://fr.rd.yahoo.com/customize/ycomp/ ... .yahoo.com
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://fr.acer.yahoo.com/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://fr.fr.acer.yahoo.com
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://fr.fr.acer.yahoo.com
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = http://fr.rd.yahoo.com/customize/ycomp/ ... .yahoo.com
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page =
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page =
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
R3 - URLSearchHook: Yahoo! Toolbar avec bloqueur de fenêtres pop-up - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O2 - BHO: Yahoo! Toolbar Helper - {02478D38-C3F9-4EFB-9B51-7695ECA05670} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O2 - BHO: (no name) - {089FD14D-132B-48FC-8861-0048AE113215} - C:\Program Files\SiteAdvisor\6261\SiteAdv.dll
O2 - BHO: Programme d'aide de l'Assistant de connexion Windows Live - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files\Common Files\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: SpoofStick BHO - {CBA74CDA-DF78-4AD9-954E-3B15D0A993DE} - C:\Program Files\CoreStreet\SpoofStick\SpoofStickBHO.dll
O3 - Toolbar: Yahoo! Toolbar avec bloqueur de fenêtres pop-up - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O3 - Toolbar: McAfee SiteAdvisor - {0BF43445-2F28-4351-9252-17FE6E806AA0} - C:\Program Files\SiteAdvisor\6261\SiteAdv.dll
O3 - Toolbar: SpoofStick - {4D46ED77-1429-4CF6-8F63-C84B5D710BAF} - C:\Program Files\CoreStreet\SpoofStick\SpoofStick.dll
O4 - HKLM\..\Run: [Windows Defender] %ProgramFiles%\Windows Defender\MSASCui.exe -hide
O4 - HKLM\..\Run: [eAudio] "C:\Acer\Empowering Technology\eAudio\eAudio.exe"
O4 - HKLM\..\Run: [WarReg_PopUp] C:\Acer\WR_PopUp\WarReg_PopUp.exe
O4 - HKLM\..\Run: [Acer Tour Reminder] C:\Acer\AcerTour\Reminder.exe
O4 - HKLM\..\Run: [avgnt] "C:\Program Files\Avira\Avira Premium Security Suite\avgnt.exe" /min
O4 - HKLM\..\Run: [NvSvc] RUNDLL32.EXE C:\Windows\system32\nvsvc.dll,nvsvcStart
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\Windows\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [SiteAdvisor] "C:\Program Files\SiteAdvisor\6261\SiteAdv.exe"
O4 - HKLM\..\Run: [LManager] C:\PROGRA~1\LAUNCH~1\LManager.exe
O4 - HKLM\..\Run: [RtHDVCpl] RtHDVCpl.exe
O4 - HKLM\..\Run: [Skytel] Skytel.exe
O4 - HKCU\..\Run: [Sidebar] C:\Program Files\Windows Sidebar\sidebar.exe /autoRun
O4 - HKCU\..\Run: [ehTray.exe] C:\Windows\ehome\ehTray.exe
O4 - HKUS\S-1-5-19\..\Run: [Sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /detectMem (User 'SERVICE LOCAL')
O4 - HKUS\S-1-5-19\..\Run: [WindowsWelcomeCenter] rundll32.exe oobefldr.dll,ShowWelcomeCenter (User 'SERVICE LOCAL')
O4 - HKUS\S-1-5-20\..\Run: [Sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /detectMem (User 'SERVICE RÉSEAU')
O4 - HKUS\S-1-5-18\..\Run: [Acer Tour Reminder] C:\Acer\AcerTour\Reminder.exe (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [Acer Tour Reminder] C:\Acer\AcerTour\Reminder.exe (User 'Default user')
O4 - Global Startup: Empowering Technology Launcher.lnk = C:\Acer\Empowering Technology\eAPLauncher.exe
O13 - Gopher Prefix:
O16 - DPF: {74DBCB52-F298-4110-951D-AD2FF67BC8AB} (NVIDIA Smart Scan) - http://www.nvidia.com/content/DriverDow ... rtScan.cab
O23 - Service: Avira Premium Security Suite Firewall (AntiVirFirewallService) - Avira GmbH - C:\Program Files\Avira\Avira Premium Security Suite\avfwsvc.exe
O23 - Service: Avira Premium Security Suite MailGuard (AntiVirMailService) - Avira GmbH - C:\Program Files\Avira\Avira Premium Security Suite\avmailc.exe
O23 - Service: Avira Premium Security Suite Scheduler (AntiVirScheduler) - Avira GmbH - C:\Program Files\Avira\Avira Premium Security Suite\sched.exe
O23 - Service: Avira Premium Security Suite Guard (AntiVirService) - Avira GmbH - C:\Program Files\Avira\Avira Premium Security Suite\avguard.exe
O23 - Service: Avira Premium Security Suite WebGuard (antivirwebservice) - Avira GmbH - C:\Program Files\Avira\Avira Premium Security Suite\AVWEBGRD.EXE
O23 - Service: Avira Premium Security Suite MailGuard helper service (AVEService) - Avira GmbH - C:\Program Files\Avira\Avira Premium Security Suite\avesvc.exe
O23 - Service: eLock Service (eLockService) - Acer Inc. - C:\Acer\Empowering Technology\eLock\Service\eLockServ.exe
O23 - Service: eNet Service - Acer Inc. - C:\Acer\Empowering Technology\eNet\eNet Service.exe
O23 - Service: eRecovery Service (eRecoveryService) - Acer Inc. - C:\Acer\Empowering Technology\eRecovery\eRecoveryService.exe
O23 - Service: eSettings Service (eSettingsService) - Unknown owner - C:\Acer\Empowering Technology\eSettings\Service\capuserv.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Common Files\InstallShield\Driver\1050\Intel 32\IDriverT.exe
O23 - Service: MobilityService - Unknown owner - C:\Acer\Mobility Center\MobilityService.exe
O23 - Service: Service SiteAdvisor (SiteAdvisor Service) - Unknown owner - C:\Program Files\SiteAdvisor\6261\SAService.exe
O23 - Service: ePower Service (WMIService) - acer - C:\Acer\Empowering Technology\ePower\ePowerSvc.exe

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End of file - 6945 bytes

Bonsoir.

Pas de problème, c'est tout bon.
Il n'y a qu'une chose qui me gêne c'est Site Advisor.
C'est un peu du pipeau.
Voici un sujet le concernant.
Je signale que je l'ai testé et bien vite abandonné.
@+