Bonsoir,
ma voisine m'a apporté sa bécane et elle semble incontrôlable.
j'ai toutefois réussi à arrêter les nombreux arrêts intempestifs grâce à des solutions que j'ai trouvé sur le forum. Puis j'ai fais un log hijackthis. Merci de me guider pour résoudre ce problème

Logfile of HijackThis v1.99.1
Scan saved at 16:38:59, on 18/11/2005
Platform: Windows XP (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 (6.00.2600.0000)

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:\WINDOWS\System32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\SUtBT1U\command.exe
C:\Program Files\Fichiers communs\Microsoft Shared\VS7Debug\mdm.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\ZONELABS\vsmon.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\syshost.exe
C:\WINDOWS\System32\winamp.exe
C:\WINDOWS\System32\algs.exe
C:\WINDOWS\System32\winsecurity.exe
C:\Program Files\Java\jre1.5.0\bin\jusched.exe
C:\DOCUME~1\KHAOUL~1.IKA\LOCALS~1\Temp\~1C.tmp.exe
C:\windows\mrjj.exe
C:\windows\adtech2005.exe
C:\DOCUME~1\KHAOUL~1.IKA\LOCALS~1\Temp\~21.tmp.exe
C:\Program Files\Zone Labs\ZoneAlarm\zlclient.exe
C:\WINDOWS\System32\ctfmon.exe
C:\DOCUME~1\KHAOUL~1.IKA\LOCALS~1\Temp\~2C.tmp.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Documents and Settings\Khaoula.IKAOU-UPLPFSZGJ\Bureau\Nouveau dossier (2)\HIJACKTHIS\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.fr/
R3 - URLSearchHook: (no name) - _{CFBFAE00-17A6-11D0-99CB-00C04FD64497} - (no file)
F2 - REG:system.ini: UserInit=C:\WINDOWS\System32\Userinit.exe
O1 - Hosts: 255.255.255.255 ar.atwola.com atdmt.com avp.ch avp.com avp.ru awaps.net ca.com dispatch.mcafee.com download.mcafee.com download.microsoft.com downloads.microsoft.com engine.awaps.net f-secure.com ftp.f-secure.com ftp.sophos.com go.microsoft.com liveupdate.symantec.com mast.mcafee.com mcafee.com msdn.microsoft.com my-etrust.com nai.com networkassociates.com office.microsoft.com phx.corporate-ir.net secure.nai.com securityresponse.symantec.com service1.symantec.com sophos.com spd.atdmt.com support.microsoft.com symantec.com update.symantec.com updates.symantec.com us.mcafee.com vil.nai.com viruslist.ru windowsupdate.microsoft.com www.avp.ch www.avp.com www.avp.ru www.awaps.net www.ca.com www.f-secure.com www.kaspersky.ru www.mcafee.com www.my-etrust.com www.nai.com www.networkassociates.com www.sophos.com www.symantec.com www.trendmicro.com www.viruslist.com www.viruslist.ru www3.ca.com
O2 - BHO: BHObj Class - {00000010-6F7D-442C-93E3-4A4827C2E4C8} - C:\WINDOWS\nem220.dll
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O4 - HKLM\..\Run: [Windows Network Firewall] C:\WINDOWS\System32\firewall.exe
O4 - HKLM\..\Run: [Client Server Runtime Process] C:\WINDOWS\System32\csrs.exe
O4 - HKLM\..\Run: [Microsoft IIS] C:\WINDOWS\system32\syshost.exe
O4 - HKLM\..\Run: [Windows Logon Application] C:\WINDOWS\System32\winIogon.exe
O4 - HKLM\..\Run: [yokd] C:\WINDOWS\System32\hlvigznodtvw.exe
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [Winamp Agent] C:\WINDOWS\System32\winamp.exe
O4 - HKLM\..\Run: [Application Layer Gateway Service] C:\WINDOWS\System32\algs.exe
O4 - HKLM\..\Run: [MS-patch33] winsecurity.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Program Files\Java\jre1.5.0\bin\jusched.exe
O4 - HKLM\..\Run: [noC=] C:\windows\mrjj.exe
O4 - HKLM\..\Run: [timessquare] c:\windows\timessquare.exe
O4 - HKLM\..\Run: [adtech2005] C:\windows\adtech2005.exe
O4 - HKLM\..\Run: [Zone Labs Client] C:\Program Files\Zone Labs\ZoneAlarm\zlclient.exe
O4 - HKLM\..\RunServices: [yokd] C:\WINDOWS\System32\hlvigznodtvw.exe
O4 - HKLM\..\RunServices: [MS-patch33] winsecurity.exe
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\ctfmon.exe
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [a-squared] "C:\Program Files\a-squared\a2guard.exe"
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0\bin\npjpi150.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0\bin\npjpi150.dll
O15 - Trusted Zone: *.media-motor.net
O15 - Trusted Zone: *.popuppers.com
O16 - DPF: {7149E79C-DC19-4C5E-A53C-A54DDF75EEE9} (IObjSafety.DemoCtl) - http://cabs.media-motor.net/cabs/joysaver.cab
O16 - DPF: {74D05D43-3236-11D4-BDCD-00C04F9A3B61} (HouseCall Control) - http://a840.g.akamai.net/7/840/537/2005102501/housecall.trendmicro.com/housecall/xscan53.cab
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - "C:\PROGRA~1\MSNMES~1\msgrapp.dll" (file missing)
O23 - Service: Command Service (cmdService) - Unknown owner - C:\WINDOWS\SUtBT1U\command.exe
O23 - Service: TrueVector Internet Monitor (vsmon) - Zone Labs, LLC - C:\WINDOWS\system32\ZONELABS\vsmon.exe



Merci de votre aide