Disque dur à toc

Bonjour,

Je suis sur un ordi du boulot et le disque dur n'arrete pas "d'écrire".
Je précise : pas d'autre logiciel que IE6 en route
L'anti-virus du boulot scan en temps réel mais pas de recherche de scan du dd prévu aujourd'hui.
j'ai fait un hijacthis qui donne ça Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 13:53:42, on 19/03/2009
Platform: Windows XP SP3 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP3 (6.00.2900.5512)
Boot mode: Normal

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\system32\LEXBCES.EXE
C:\WINDOWS\system32\LEXPPS.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Java\jre6\bin\jqs.exe
C:\OFCSCAN\ntrtscan.exe
C:\WINDOWS\system32\svchost.exe
C:\OFCSCAN\tmlisten.exe
C:\Program Files\RealVNC\WinVNC\WinVNC.exe
C:\Program Files\Fichiers communs\Symantec Shared\Security Center\SymWSC.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\hkcmd.exe
C:\WINDOWS\SOUNDMAN.EXE
C:\Program Files\HP\hpcoretech\hpcmpmgr.exe
C:\WINDOWS\system32\spool\drivers\w32x86\3\hpztsb10.exe
C:\OFCSCAN\pccntmon.exe
C:\WINDOWS\system32\LXSUPMON.EXE
C:\Program Files\Hewlett-Packard\HP Share-to-Web\hpgs2wnd.exe
C:\progra~1\scansoft\paperp~1\pptd40nt.exe
C:\Program Files\Hewlett-Packard\HP Software Update\HPWuSchd2.exe
C:\Program Files\Hewlett-Packard\HP Share-to-Web\hpgs2wnf.exe
C:\Program Files\Java\jre6\bin\jusched.exe
C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe
C:\Program Files\Microsoft Office\Office\OSA.EXE
C:\Program Files\Microsoft Office\Office\FINDFAST.EXE
C:\Program Files\OpenOffice.org 2.4\program\soffice.exe
C:\Program Files\OpenOffice.org 2.4\program\soffice.BIN
C:\WINDOWS\TEMP\HQ51C1.EXE
C:\WINDOWS\system32\wbem\wmiapsrv.exe
C:\OFCSCAN\TmPfw.exe
C:\OFCSCAN\CNTAoSMgr.exe
C:\OFCSCAN\tmproxy.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Adobe\Acrobat 7.0\Reader\acrord32.exe
C:\Program Files\Microsoft Office\Office\FINDFAST.EXE
C:\Program Files\Trend Micro\HijackThis\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.fr/
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O1 - Hosts: 150.1.26.1 pastel
O1 - Hosts: 150.1.2.1 eurodim
O1 - Hosts: 150.1.103.1 magape1
O2 - BHO: Adobe PDF Reader Link Helper - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: RealPlayer Download and Record Plugin for Internet Explorer - {3049C3E9-B461-4BC5-8870-4C09146192CA} - C:\Program Files\Real\RealPlayer\rpbrowserrecordplugin.dll
O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Program Files\Java\jre6\bin\jp2ssv.dll
O2 - BHO: JQSIEStartDetectorImpl - {E7E6F031-17CE-4C07-BC86-EABFE594F69C} - C:\Program Files\Java\jre6\lib\deploy\jqs\ie\jqs_plugin.dll
O4 - HKLM\..\Run: [IMJPMIG8.1] "C:\WINDOWS\IME\imjp8_1\IMJPMIG.EXE" /Spoil /RemAdvDef /Migration32
O4 - HKLM\..\Run: [PHIME2002ASync] C:\WINDOWS\system32\IME\TINTLGNT\TINTSETP.EXE /SYNC
O4 - HKLM\..\Run: [PHIME2002A] C:\WINDOWS\system32\IME\TINTLGNT\TINTSETP.EXE /IMEName
O4 - HKLM\..\Run: [IgfxTray] C:\WINDOWS\system32\igfxtray.exe
O4 - HKLM\..\Run: [HotKeysCmds] C:\WINDOWS\system32\hkcmd.exe
O4 - HKLM\..\Run: [SoundMan] SOUNDMAN.EXE
O4 - HKLM\..\Run: [HP Component Manager] "C:\Program Files\HP\hpcoretech\hpcmpmgr.exe"
O4 - HKLM\..\Run: [HPDJ Taskbar Utility] C:\WINDOWS\system32\spool\drivers\w32x86\3\hpztsb10.exe
O4 - HKLM\..\Run: [OfficeScanNT Monitor] "C:\OFCSCAN\pccntmon.exe" -HideWindow
O4 - HKLM\..\Run: [WinVNC] "C:\Program Files\RealVNC\WinVNC\WinVNC.exe" -servicehelper
O4 - HKLM\..\Run: [LXSUPMON] C:\WINDOWS\system32\LXSUPMON.EXE RUN
O4 - HKLM\..\Run: [Share-to-Web Namespace Daemon] C:\Program Files\Hewlett-Packard\HP Share-to-Web\hpgs2wnd.exe
O4 - HKLM\..\Run: [PaperPort PTD] c:\progra~1\scansoft\paperp~1\pptd40nt.exe
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [HP Software Update] C:\Program Files\Hewlett-Packard\HP Software Update\HPWuSchd2.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre6\bin\jusched.exe"
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe" -osboot
O4 - HKCU\..\Run: [Update Service] C:\PROGRA~1\FICHIE~1\TEKNUM~1\update.exe /startup
O4 - HKUS\S-1-5-19\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SERVICE LOCAL')
O4 - HKUS\S-1-5-20\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SERVICE RÉSEAU')
O4 - HKUS\S-1-5-18\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'Default user')
O4 - Startup: OpenOffice.org 2.4.lnk = C:\Program Files\OpenOffice.org 2.4\program\quickstart.exe
O4 - Global Startup: Démarrage d'Office.lnk = C:\Program Files\Microsoft Office\Office\OSA.EXE
O4 - Global Startup: Lancement rapide d'Adobe Reader.lnk = C:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O4 - Global Startup: Microsoft Recherche accélérée.lnk = C:\Program Files\Microsoft Office\Office\FINDFAST.EXE
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
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
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://www.update.microsoft.com/...
O17 - HKLM\System\CCS\Services\Tcpip\..\{D5AC979D-54A8-41C2-8CC0-22102E17DBE6}: NameServer = 194.2.0.20,194.2.0.50
O23 - Service: Google Updater Service (gusvc) - Google - C:\Program Files\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: Java Quick Starter (JavaQuickStarterService) - Sun Microsystems, Inc. - C:\Program Files\Java\jre6\bin\jqs.exe
O23 - Service: LexBce Server (LexBceS) - Lexmark International, Inc. - C:\WINDOWS\system32\LEXBCES.EXE
O23 - Service: OfficeScanNT RealTime Scan (ntrtscan) - Trend Micro Inc. - C:\OFCSCAN\ntrtscan.exe
O23 - Service: OracleOra817ClientCache - Unknown owner - C:\ora817\BIN\ONRSD.EXE
O23 - Service: SymWMI Service (SymWSC) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\Security Center\SymWSC.exe
O23 - Service: OfficeScan NT Listener (tmlisten) - Trend Micro Inc. - C:\OFCSCAN\tmlisten.exe
O23 - Service: Pare-feu OfficeScanNT (TmPfw) - Trend Micro Inc. - C:\OFCSCAN\TmPfw.exe
O23 - Service: OfficeScan NT Proxy Service (TmProxy) - Trend Micro Inc. - C:\OFCSCAN\TmProxy.exe
O23 - Service: VNC Server (winvnc) - RealVNC Ltd. - C:\Program Files\RealVNC\WinVNC\WinVNC.exe