Ordi très lent

Bonjour à tous

Problème malheureusement qui touche bcp de monde mais depuis qq jours mon ordi rame lamentablement.
Les applications se lancent mais très très lentement. J'ai effectué les contrôles habituels (mémoire, defrag, virus, antispyware, ...) mais rien de rien. Je n'arrive pas à détecter la panne.
Et évidemment pas de sauvegarde antérieure pour revenir en arrière...
Petit hijack donc dont je vous livre ici les résultats. Je remercie par avance la bonne âme qui pourra m'aider :

Logfile of HijackThis v1.99.1
Scan saved at 23:41:02, on 07/08/2007
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.6000.16473)

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\system32\Ati2evxx.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Zone Labs\ZoneAlarm\zlclient.exe
C:\Program Files\Adobe\Photoshop Elements 4.0\PhotoshopElementsFileAgent.exe
C:\WINDOWS\system32\CTsvcCDA.EXE
C:\Program Files\Fichiers communs\McAfee\HackerWatch\HWAPI.exe
C:\PROGRA~1\McAfee\MSC\mcmscsvc.exe
c:\program files\fichiers communs\mcafee\mna\mcnasvc.exe
C:\PROGRA~1\McAfee\VIRUSS~1\mcods.exe
C:\PROGRA~1\McAfee\MSC\mcpromgr.exe
c:\PROGRA~1\FICHIE~1\mcafee\redirsvc\redirsvc.exe
C:\PROGRA~1\McAfee\VIRUSS~1\mcsysmon.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\ZoneLabs\vsmon.exe
C:\PROGRA~1\mcafee.com\agent\mcagent.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\lxcecoms.exe
c:\program files\mcafee\msc\mcuimgr.exe
C:\Program Files\Adobe\Photoshop Elements 4.0\PhotoshopElementsOrganizer.exe
C:\Program Files\EasyBox\VLC\VLC.exe
C:\Program Files\EasyBox\Apache\Apache.exe
C:\Program Files\EasyBox\Apache\Apache.exe
C:\Program Files\Adobe\Acrobat 7.0\Reader\AcroRd32.exe
C:\Program Files\Adobe\Acrobat 7.0\Reader\AcroRd32Info.exe
C:\Documents and Settings\Olivier\Bureau\HijackThis.exe

R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = https://www.msn.com/fr-fr/?ocid=iehp
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = https://www.bing.com/?toHttps=1&redig=5FC791212101479BAFBE1A679848B1AF
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = https://www.bing.com/?toHttps=1&redig=5FC791212101479BAFBE1A679848B1AF
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.msn.com/fr-fr/?ocid=iehp
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: Adobe PDF Reader Link Helper - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.5.0_06\bin\ssv.dll
O2 - BHO: scriptproxy - {7DB2D5A0-7241-4E79-B68D-6309F01C5231} - c:\program files\mcafee\virusscan\scriptcl.dll
O4 - HKLM\..\Run: [Adobe Photo Downloader] "C:\Program Files\Adobe\Photoshop Elements 4.0\apdproxy.exe"
O4 - HKLM\..\Run: [LXCECATS] rundll32 C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\LXCEtime.dll,_RunDLLEntry@16
O4 - HKLM\..\Run: [EzPrint] "C:\Program Files\Lexmark 4300 Series\ezprint.exe"
O4 - HKLM\..\Run: [NeroFilterCheck] C:\Program Files\Fichiers communs\Ahead\Lib\NeroCheck.exe
O4 - HKLM\..\Run: [ZoneAlarm Client] "C:\Program Files\Zone Labs\ZoneAlarm\zlclient.exe"
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [BgMonitor_{79662E04-7C6C-4d9f-84C7-88D8A56B10AA}] "C:\Program Files\Fichiers communs\Ahead\Lib\NMBgMonitor.exe"
O4 - Startup: Adobe Gamma.lnk = C:\Program Files\Fichiers communs\Adobe\Calibration\Adobe Gamma Loader.exe
O4 - Startup: Azureus.lnk = D:\Program Files\Azureus\Azureus.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 Office.lnk = C:\Program Files\Microsoft Office\Office\OSA9.EXE
O4 - Global Startup: WD Backup Monitor.lnk = C:\Program Files\My Book\WD Backup\uBBMonitor.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: (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)
O11 - Options group: [INTERNATIONAL] International*
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://update.microsoft.com/...
O16 - DPF: {6E32070A-766D-4EE6-879C-DC1FA91D2FC3} (MUWebControl Class) - http://update.microsoft.com/...
O21 - SSODL: WPDShServiceObj - {AAA288BA-9A4C-45B0-95D7-94D524869DB5} - C:\WINDOWS\system32\WPDShServiceObj.dll
O23 - Service: Adobe LM Service - Adobe Systems - C:\Program Files\Fichiers communs\Adobe Systems Shared\Service\Adobelmsvc.exe
O23 - Service: Adobe Active File Monitor V4 (AdobeActiveFileMonitor4.0) - Unknown owner - C:\Program Files\Adobe\Photoshop Elements 4.0\PhotoshopElementsFileAgent.exe
O23 - Service: Ati HotKey Poller - ATI Technologies Inc. - C:\WINDOWS\system32\Ati2evxx.exe
O23 - Service: ATI Smart - Unknown owner - C:\WINDOWS\system32\ati2sgag.exe
O23 - Service: Creative Service for CDROM Access - Creative Technology Ltd - C:\WINDOWS\system32\CTsvcCDA.EXE
O23 - Service: EasyBoxApache - Unknown owner - C:\Program Files\EasyBox\Apache\Apache.exe" -k runservice (file missing)
O23 - Service: McAfee E-mail Proxy (Emproxy) - McAfee, Inc. - C:\PROGRA~1\FICHIE~1\McAfee\EmProxy\emproxy.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Fichiers communs\InstallShield\Driver\1050\Intel 32\IDriverT.exe
O23 - Service: lxce_device - Lexmark International, Inc. - C:\WINDOWS\system32\lxcecoms.exe
O23 - Service: McAfee HackerWatch Service - McAfee, Inc. - C:\Program Files\Fichiers communs\McAfee\HackerWatch\HWAPI.exe
O23 - Service: McAfee Update Manager (mcmispupdmgr) - McAfee, Inc. - C:\PROGRA~1\McAfee\MSC\mcupdmgr.exe
O23 - Service: McAfee Services (mcmscsvc) - McAfee, Inc. - C:\PROGRA~1\McAfee\MSC\mcmscsvc.exe
O23 - Service: McAfee Network Agent (McNASvc) - McAfee, Inc. - c:\program files\fichiers communs\mcafee\mna\mcnasvc.exe
O23 - Service: McAfee Scanner (McODS) - McAfee, Inc. - C:\PROGRA~1\McAfee\VIRUSS~1\mcods.exe
O23 - Service: McAfee Protection Manager (mcpromgr) - McAfee, Inc. - C:\PROGRA~1\McAfee\MSC\mcpromgr.exe
O23 - Service: McAfee Redirector Service (McRedirector) - McAfee, Inc. - c:\PROGRA~1\FICHIE~1\mcafee\redirsvc\redirsvc.exe
O23 - Service: McAfee Real-time Scanner (McShield) - McAfee, Inc. - C:\PROGRA~1\McAfee\VIRUSS~1\mcshield.exe
O23 - Service: McAfee SystemGuards (McSysmon) - McAfee, Inc. - C:\PROGRA~1\McAfee\VIRUSS~1\mcsysmon.exe
O23 - Service: TrueVector Internet Monitor (vsmon) - Zone Labs, LLC - C:\WINDOWS\system32\ZoneLabs\vsmon.exe