Bonjour, 
Mais PC était trop lent.
J'ai donc effectué un premier nettoyage avec :
Easy Cleaner
CCLeaner
AVG Anti-Syware
Mais pas de changement ! 
Voici les rapports AVG et HijackThis.
AVG :
---------------------------------------------------------
AVG Anti-Spyware - Rapport d'analyse
---------------------------------------------------------
+ Créé à: 09:23:36 04/11/2006
+ Résultat de l'analyse:
C:\Documents and Settings\LocalService\Application Data\ShopperReports -> Adware.HotBar : Nettoyé et sauvegardé (mise en quarantaine).
C:\Documents and Settings\LocalService\Application Data\ShopperReports\cs -> Adware.HotBar : Nettoyé et sauvegardé (mise en quarantaine).
C:\Documents and Settings\LocalService\Application Data\ShopperReports\cs\Config.xml -> Adware.HotBar : Nettoyé et sauvegardé (mise en quarantaine).
C:\Documents and Settings\LocalService\Application Data\ShopperReports\cs\dwld -> Adware.HotBar : Nettoyé et sauvegardé (mise en quarantaine).
C:\Documents and Settings\LocalService\Application Data\ShopperReports\cs\dwld\WhiteList.xip -> Adware.HotBar : Nettoyé et sauvegardé (mise en quarantaine).
C:\Documents and Settings\LocalService\Application Data\ShopperReports\cs\persist.dbs -> Adware.HotBar : Nettoyé et sauvegardé (mise en quarantaine).
C:\Documents and Settings\LocalService\Application Data\ShopperReports\cs\report -> Adware.HotBar : Nettoyé et sauvegardé (mise en quarantaine).
C:\Documents and Settings\LocalService\Application Data\ShopperReports\cs\report\ag_ShopperReports.xml -> Adware.HotBar : Nettoyé et sauvegardé (mise en quarantaine).
C:\Documents and Settings\LocalService\Application Data\ShopperReports\cs\report\ag_ShopperReports.xml.db -> Adware.HotBar : Nettoyé et sauvegardé (mise en quarantaine).
C:\Documents and Settings\LocalService\Application Data\ShopperReports\cs\report\send_ShopperReports.xml -> Adware.HotBar : Nettoyé et sauvegardé (mise en quarantaine).
C:\Documents and Settings\LocalService\Application Data\ShopperReports\cs\report\send_ShopperReports.xml.db -> Adware.HotBar : Nettoyé et sauvegardé (mise en quarantaine).
C:\Documents and Settings\LocalService\Application Data\ShopperReports\cs\res1 -> Adware.HotBar : Nettoyé et sauvegardé (mise en quarantaine).
C:\Documents and Settings\LocalService\Application Data\ShopperReports\cs\res1\WhiteList.dbs -> Adware.HotBar : Nettoyé et sauvegardé (mise en quarantaine).
C:\Documents and Settings\LocalService\Application Data\ShopperReports\shprrprt.log -> Adware.HotBar : Nettoyé et sauvegardé (mise en quarantaine).
C:\Program Files\LogMeIn\LMIinit.dll -> Not-A-Virus.RemoteAdmin.Win32.RemotelyAnywhere.a : Nettoyé et sauvegardé (mise en quarantaine).
C:\Program Files\LogMeIn\update\2-30-547.bak\LMIinit.dll -> Not-A-Virus.RemoteAdmin.Win32.RemotelyAnywhere.a : Nettoyé et sauvegardé (mise en quarantaine).
C:\WINDOWS\system32\LMIinit.dll -> Not-A-Virus.RemoteAdmin.Win32.RemotelyAnywhere.a : Nettoyé et sauvegardé (mise en quarantaine).
C:\WINDOWS\system32\LMIinit.dll.000.bak -> Not-A-Virus.RemoteAdmin.Win32.RemotelyAnywhere.a : Nettoyé et sauvegardé (mise en quarantaine).
[252] C:\WINDOWS\system32\LMIinit.dll -> Not-A-Virus.RemoteAdmin.Win32.RemotelyAnywhere.a : Nettoyé et sauvegardé (mise en quarantaine).
Fin du rapport
HijackThis:
Logfile of HijackThis v1.99.1
Scan saved at 09:35:46, on 04/11/2006
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.5730.0011)
Running processes:
C:\WINDOWS\System32\smss.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\Explorer.EXE
C:\WINDOWS\system32\LEXBCES.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\system32\LEXPPS.EXE
C:\Apps\ActivBoard\nhksrv.exe
C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\guard.exe
C:\Program Files\Fichiers communs\Symantec Shared\ccSetMgr.exe
C:\Program Files\LogMeIn\RaMaint.exe
C:\Program Files\Fichiers communs\Symantec Shared\ccApp.exe
C:\Program Files\Virtual CD v4 SDK\system\vcsplay.exe
C:\Program Files\Lexmark 4300 Series\lxcemon.exe
C:\Program Files\LogMeIn\LogMeIn.exe
C:\Program Files\Lexmark 4300 Series\ezprint.exe
C:\WINDOWS\Twain_32\USB2.0Camera\SnapTrap.exe
C:\Program Files\Java\jre1.5.0_06\bin\jusched.exe
C:\WINDOWS\system32\rundll32.exe
C:\Apps\ActivBoard\MMKeybd.exe
C:\Program Files\LogMeIn\LogMeInSystray.exe
C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\avgas.exe
C:\Program Files\12014SC Wireless Combo Set\MouseDrv.exe
C:\Program Files\Messenger\msmsgs.exe
C:\Program Files\12014SC Wireless Combo Set\PS2USBKbdDrv.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\Fichiers communs\Microsoft Shared\VS7Debug\mdm.exe
C:\Apps\ActivBoard\TrayMon.exe
C:\Apps\ActivBoard\OSD.exe
C:\Program Files\Norton AntiVirus\navapsvc.exe
C:\WINDOWS\System32\nvsvc32.exe
C:\Program Files\Norton AntiVirus\SAVScan.exe
C:\WINDOWS\system32\slserv.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Virtual CD v4 SDK\system\vcssecs.exe
C:\Program Files\Fichiers communs\Symantec Shared\ccEvtMgr.exe
C:\WINDOWS\system32\wuauclt.exe
C:\WINDOWS\system32\lxcecoms.exe
C:\Program Files\Microsoft Money\System\urlmap.exe
C:\DOCUME~1\ERIC\LOCALS~1\Temp\Répertoire temporaire 1 pour hijackthis.zip\HijackThis.exe
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://fr.yahoo.com/
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\Main,Local Page =
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Window Title = Microsoft Internet Explorer
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: EoRezoBHO - {64F56FC1-1272-44CD-BA6E-39723696E350} - (no file)
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.5.0_06\bin\ssv.dll
O2 - BHO: CNavExtBho Class - {BDF3E430-B101-42AD-A544-FADC6B084872} - C:\Program Files\Norton AntiVirus\NavShExt.dll
O2 - BHO: (no name) - {FDD3B846-8D59-4ffb-8758-209B6AD74ACC} - C:\Program Files\Microsoft Money\System\mnyviewer.dll
O3 - Toolbar: Norton AntiVirus - {42CDD1BF-3FFB-4238-8AD1-7859DF00B1D6} - C:\Program Files\Norton AntiVirus\NavShExt.dll
O3 - Toolbar: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn0\yt.dll
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE NvQTwk,NvCplDaemon initialize
O4 - HKLM\..\Run: [EM_EXEC] C:\PROGRA~1\MOUSEW~1\SYSTEM\EM_EXEC.EXE
O4 - HKLM\..\Run: [ccApp] "C:\Program Files\Fichiers communs\Symantec Shared\ccApp.exe"
O4 - HKLM\..\Run: [Symantec NetDriver Monitor] C:\PROGRA~1\SYMNET~1\SNDMon.exe /Consumer
O4 - HKLM\..\Run: [VCSPlayer] "C:\Program Files\Virtual CD v4 SDK\system\vcsplay.exe"
O4 - HKLM\..\Run: [LXCECATS] rundll32 C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\LXCEtime.dll,_RunDLLEntry@16
O4 - HKLM\..\Run: [lxcemon.exe] "C:\Program Files\Lexmark 4300 Series\lxcemon.exe"
O4 - HKLM\..\Run: [EzPrint] "C:\Program Files\Lexmark 4300 Series\ezprint.exe"
O4 - HKLM\..\Run: [FaxCenterServer] "C:\Program Files\Lexmark Fax Solutions\fm3032.exe" /s
O4 - HKLM\..\Run: [STICAP] C:\WINDOWS\Twain_32\USB2.0Camera\SnapTrap.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Program Files\Java\jre1.5.0_06\bin\jusched.exe
O4 - HKLM\..\Run: [WireLessMouse] C:\Program Files\12014SC Wireless Combo Set\StartAutorun.exe MouseDrv.exe
O4 - HKLM\..\Run: [WireLessKeyboard] C:\Program Files\12014SC Wireless Combo Set\StartAutorun.exe PS2USBKbdDrv.exe
O4 - HKLM\..\Run: [AdslTaskBar] rundll32.exe stmctrl.dll,TaskBar
O4 - HKLM\..\Run: [ACTIVBOARD] C:\Apps\ActivBoard\MMKeybd.exe
O4 - HKLM\..\Run: [LogMeIn GUI] "C:\Program Files\LogMeIn\LogMeInSystray.exe"
O4 - HKLM\..\Run: [!AVG Anti-Spyware] "C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\avgas.exe" /minimized
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [Update Service] C:\PROGRA~1\FICHIE~1\TEKNUM~1\update.exe /startup
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [MoneyAgent] "C:\Program Files\Microsoft Money\System\Money Express.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
O9 - Extra button: Packard Bell - {1D49B7D4-524D-4ac9-BC34-B4822CAE4BB1} - C:\Apps\IECustom\script.htm
O9 - Extra button: Real.com - {CD67F990-D8E9-11d2-98FE-00C0F0318AFE} - C:\WINDOWS\System32\Shdocvw.dll
O9 - Extra button: MoneySide - {E023F504-0C5A-4750-A1E7-A9046DEA8A21} - C:\Program Files\Microsoft Money\System\mnyviewer.dll
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - %windir%\Network Diagnostic\xpnetdiag.exe (file missing)
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - %windir%\Network Diagnostic\xpnetdiag.exe (file missing)
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
O11 - Options group: [INTERNATIONAL] International*
O14 - IERESET.INF: START_PAGE_URL=www.packardbell.fr/center
O16 - DPF: Yahoo! Hearts - http://download.games.yahoo.com/ga [...] /ht1_x.cab
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://v5.windowsupdate.microsoft. [...] 7855622546
O16 - DPF: {8F48147B-78D9-40F9-ACC0-BDDE59B246F4} (AccountHelper Class) - https://ssl.tele2.com/inc/accounthelper.cab
O16 - DPF: {9A9307A0-7DA4-4DAF-B042-5009F29E09E1} (ActiveScan Installer Class) - http://acs.pandasoftware.com/activ [...] asinst.cab
O16 - DPF: {B38870E4-7ECB-40DA-8C6A-595F0A5519FF} (MsnMessengerSetupDownloadControl Class) - http://messenger.msn.com/download/ [...] loader.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{50A4BBA9-9A7D-409E-8671-086E81842BC0}: NameServer = 212.151.137.170 212.151.136.246
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - "C:\PROGRA~1\MSNMES~1\msgrapp.dll" (file missing)
O20 - Winlogon Notify: LMIinit - LMIinit.dll (file missing)
O20 - Winlogon Notify: WgaLogon - C:\WINDOWS\SYSTEM32\WgaLogon.dll
O23 - Service: AVG Anti-Spyware Guard - Anti-Malware Development a.s. - C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\guard.exe
O23 - Service: Symantec Event Manager (ccEvtMgr) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\ccEvtMgr.exe
O23 - Service: Symantec Password Validation (ccPwdSvc) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\ccPwdSvc.exe
O23 - Service: Symantec Settings Manager (ccSetMgr) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\ccSetMgr.exe
O23 - Service: LexBce Server (LexBceS) - Lexmark International, Inc. - C:\WINDOWS\system32\LEXBCES.EXE
O23 - Service: LogMeIn Maintenance Service (LMIMaint) - LogMeIn, Inc. - C:\Program Files\LogMeIn\RaMaint.exe
O23 - Service: LogMeIn - LogMeIn, Inc. - C:\Program Files\LogMeIn\LogMeIn.exe
O23 - Service: lxce_device - Lexmark International, Inc. - C:\WINDOWS\system32\lxcecoms.exe
O23 - Service: Service Norton AntiVirus Auto-Protect (navapsvc) - Symantec Corporation - C:\Program Files\Norton AntiVirus\navapsvc.exe
O23 - Service: Netropa NHK Server (nhksrv) - Unknown owner - C:\Apps\ActivBoard\nhksrv.exe
O23 - Service: NVIDIA Driver Helper Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\System32\nvsvc32.exe
O23 - Service: SAVScan - Symantec Corporation - C:\Program Files\Norton AntiVirus\SAVScan.exe
O23 - Service: ScriptBlocking Service (SBService) - Symantec Corporation - C:\PROGRA~1\FICHIE~1\SYMANT~1\SCRIPT~1\SBServ.exe
O23 - Service: SmartLinkService (SLService) - - C:\WINDOWS\SYSTEM32\slserv.exe
O23 - Service: Symantec Network Drivers Service (SNDSrvc) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\SNDSrvc.exe
O23 - Service: SymWMI Service (SymWSC) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\Security Center\SymWSC.exe
O23 - Service: Virtual CD v4 Security service (SDK - Version) (VCSSecS) - H+H Software GmbH - C:\Program Files\Virtual CD v4 SDK\system\vcssecs.exe
Merci par avance pour votre aide. 
FORUM HardWare.fr
