bonjour 
Voici mon probleme : apres l'execution d un programme gourmand en ressource processeur ( du style analyse anti virus ) le processus system s'emballe et occupe pratiquement 100% du processeur , le processus taskmgr occupe les dernier pourcent qui reste...Ce probleme est survenu il y a une semaine depuis j ai reformate mon disque et il persiste...mon antivirus est fsecure (de meme que mon firewall) apres analyse tout est clean je n est aucun virus present... 
Sinon si je n execute pas de programme necessitant une grande ressource processeur tout va bien system ne prend pas de ressource, ma machine se comporte normallement...voila si quel qu un sait ce qu il se passe... 
Ci dessous le log d'hijackthis : 
Logfile of HijackThis v1.99.1 
Scan saved at 08:36:37, on 16/04/2005 
Platform: Windows XP SP1 (WinNT 5.01.2600) 
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106) 
  
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\Ati2evxx.exe 
C:\WINDOWS\system32\svchost.exe 
C:\WINDOWS\System32\svchost.exe 
C:\WINDOWS\Explorer.EXE 
C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe 
C:\Program Files\Java\j2re1.4.2_03\bin\jusched.exe 
C:\Program Files\Fichiers communs\Autodesk Shared\Service\AdskScSrv.exe 
C:\WINDOWS\AGRSMMSG.exe 
C:\PROGRA~1\F-SECU~1\backweb\4476822\Program\SERVIC~1.EXE 
C:\Program Files\QuickTime\qttask.exe 
C:\Program Files\Winamp\winampa.exe 
C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe 
C:\Program Files\F-Secure Internet Security\Anti-Virus\fsgk32st.exe 
C:\Program Files\F-Secure Internet Security\backweb\4476822\Program\fspex.exe 
C:\Program Files\F-Secure Internet Security\Anti-Virus\FSGK32.EXE 
C:\Program Files\F-Secure Internet Security\backweb\4476822\program\fsbwsys.exe 
C:\Program Files\F-Secure Internet Security\Common\FSM32.EXE 
C:\Program Files\F-Secure Internet Security\Common\FSMA32.EXE 
C:\themeGold55\CursorXP\CursorXP.exe 
C:\Program Files\F-Secure Internet Security\Anti-Virus\fssm32.exe 
C:\Program Files\F-Secure Internet Security\Common\FSMB32.EXE 
C:\WINDOWS\System32\ctfmon.exe 
C:\Program Files\MSN Messenger\MsnMsgr.Exe 
C:\Program Files\F-Secure Internet Security\Common\FCH32.EXE 
C:\Program Files\Adobe\Acrobat 5.0\Distillr\AcroTray.exe 
C:\Program Files\F-Secure Internet Security\Common\FAMEH32.EXE 
C:\Program Files\F-Secure Internet Security\FSPC\fspc.exe 
C:\Program Files\F-Secure Internet Security\FWES\Program\fsdfwd.exe 
C:\Program Files\F-Secure Internet Security\Anti-Virus\fsav32.exe 
C:\Program Files\F-Secure Internet Security\FSGUI\fsguiexe.exe 
C:\Program Files\F-Secure Internet Security\FSGUI\fsavgui.exe 
C:\WINDOWS\System32\taskmgr.exe 
C:\WINDOWS\System32\SNDVOL32.EXE 
C:\Program Files\Internet Explorer\IEXPLORE.EXE 
C:\WINDOWS\system32\spoolsv.exe 
C:\WINDOWS\PCHealth\HelpCtr\Binaries\HelpSvc.exe 
C:\WINDOWS\PCHealth\HelpCtr\Binaries\HelpCtr.exe 
C:\WINDOWS\PCHealth\HelpCtr\Binaries\HelpHost.exe 
C:\WINDOWS\pchealth\helpctr\binaries\helpctr.exe 
C:\WINDOWS\System32\cmd.exe 
C:\Documents and Settings\niko\Mes documents\soft\HijackThis.exe 
  
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.fr 
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.google.fr 
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens 
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 5.0\Acrobat\ActiveX\AcroIEHelper.ocx 
O4 - HKLM\..\Run: [ATIPTA] C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe 
O4 - HKLM\..\Run: [sunJavaUpdateSched] C:\Program Files\Java\j2re1.4.2_03\bin\jusched.exe 
O4 - HKLM\..\Run: [AGRSMMSG] AGRSMMSG.exe 
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime 
O4 - HKLM\..\Run: [WinampAgent] C:\Program Files\Winamp\winampa.exe 
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe"  -osboot 
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe 
O4 - HKLM\..\Run: [F-Secure Manager] "C:\Program Files\F-Secure Internet Security\Common\FSM32.EXE" /splash 
O4 - HKLM\..\Run: [F-Secure TNB] "C:\Program Files\F-Secure Internet Security\TNB\TNBUtil.exe" /CHECKALL /WAITFORSW 
O4 - HKLM\..\Run: [F-Secure Startup Wizard] "C:\Program Files\F-Secure Internet Security\FSGUI\FSSW.EXE" /reboot 
O4 - HKCU\..\Run: [CursorXP] C:\themeGold55\CursorXP\CursorXP.exe -s 
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\System32\ctfmon.exe 
O4 - HKCU\..\Run: [MsnMsgr] "C:\Program Files\MSN Messenger\MsnMsgr.Exe" /background 
O4 - Global Startup: Acrobat Assistant.lnk = C:\Program Files\Adobe\Acrobat 5.0\Distillr\AcroTray.exe 
O4 - Global Startup: Adobe Gamma Loader.lnk = C:\Program Files\Fichiers communs\Adobe\Calibration\Adobe Gamma Loader.exe 
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\WINDOWS\System32\msjava.dll 
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\WINDOWS\System32\msjava.dll 
O9 - Extra button: Filtre Web - {200DB664-75B5-47c0-8B45-A44ACCF73C00} - C:\Program Files\F-Secure Internet Security\FSPC\fspcmsie.dll 
O9 - Extra button: (no name) - {200DB664-75B5-47c0-8B45-A44ACCF73F01} - C:\Program Files\F-Secure Internet Security\FSPC\fspcmsie.dll 
O9 - Extra 'Tools' menuitem: Afficher la &liste des sites Web - {200DB664-75B5-47c0-8B45-A44ACCF73F01} - C:\Program Files\F-Secure Internet Security\FSPC\fspcmsie.dll 
O9 - Extra button: (no name) - {200DB664-75B5-47c0-8B45-A44ACCF73F02} - C:\Program Files\F-Secure Internet Security\FSPC\fspcmsie.dll 
O9 - Extra 'Tools' menuitem: &Interrompre le filtre de la page Web - {200DB664-75B5-47c0-8B45-A44ACCF73F02} - C:\Program Files\F-Secure Internet Security\FSPC\fspcmsie.dll 
O9 - Extra button: (no name) - {200DB664-75B5-47c0-8B45-A44ACCF73F03} - C:\Program Files\F-Secure Internet Security\FSPC\fspcmsie.dll 
O9 - Extra 'Tools' menuitem: &Refuser ce site Web - {200DB664-75B5-47c0-8B45-A44ACCF73F03} - C:\Program Files\F-Secure Internet Security\FSPC\fspcmsie.dll 
O9 - Extra button: (no name) - {200DB664-75B5-47c0-8B45-A44ACCF73F04} - C:\Program Files\F-Secure Internet Security\FSPC\fspcmsie.dll 
O9 - Extra 'Tools' menuitem: &Autoriser ce site Web - {200DB664-75B5-47c0-8B45-A44ACCF73F04} - C:\Program Files\F-Secure Internet Security\FSPC\fspcmsie.dll 
O10 - Broken Internet access because of LSP provider 'winsflt.dll' missing 
O14 - IERESET.INF: START_PAGE_URL=http://www.google.fr 
O16 - DPF: {B38870E4-7ECB-40DA-8C6A-595F0A5519FF} (MsnMessengerSetupDownloadControl Class) - http://messenger.msn.com/download/msnmesse...pdownloader.cab 
O17 - HKLM\System\CCS\Services\Tcpip\..\{0625EE5D-4224-4266-9894-F907C25BDE0B}: NameServer = 61.139.2.69,202.97.7.17 
O23 - Service: Ati HotKey Poller - Unknown owner - C:\WINDOWS\System32\Ati2evxx.exe 
O23 - Service: Autodesk Licensing Service - Unknown owner - C:\Program Files\Fichiers communs\Autodesk Shared\Service\AdskScSrv.exe 
O23 - Service: F-Secure Internet Security 2005 (BackWeb Plug-in - 4476822) - Unknown owner - C:\PROGRA~1\F-SECU~1\backweb\4476822\Program\SERVIC~1.EXE 
O23 - Service: F-Secure Gatekeeper Handler Starter - F-Secure Corp. - C:\Program Files\F-Secure Internet Security\Anti-Virus\fsgk32st.exe 
O23 - Service: fsbwsys - F-Secure Corp. - C:\Program Files\F-Secure Internet Security\backweb\4476822\program\fsbwsys.exe 
O23 - Service: F-Secure Anti-Virus Firewall Daemon (FSDFWD) - F-Secure Corporation - C:\Program Files\F-Secure Internet Security\FWES\Program\fsdfwd.exe 
O23 - Service: F-Secure HTTP Server (fshttps) - F-Secure Corporation - C:\Program Files\F-Secure Internet Security\FSPC\fshttps\fshttps.exe 
O23 - Service: F-Secure Management Agent (FSMA) - F-Secure Corporation - C:\Program Files\F-Secure Internet Security\Common\FSMA32.EXE