Urgent ! HijackThis v1.99.1

Bonjour,
Windows augmente sans cesse ma mémoire virtuelle (il m'en informe au fur et à mesure).
Mon portable "rame" et c'est de plus en plus long (d'où aggravation).
Quand je demande une défragmentation, il affiche que celle-ci n'est pas nécessaire et que je dispose d'un espace suffisant.
Quand je lance "bitdefender" en scan en ligne, celui-ci tourne durant 3 h et à la fin je reçois le message "Ce programme ne répond plus" et je dois l'arrêter.
De temps en temps, mon portable s'éteind subitement.
Quelqu'un pourrait-il venir à mon secours ?
En vous remerciant par avance.
Ci-dessous le rapport d'HijackThis (après les opérations décrites ci-dessus)

Logfile of HijackThis v1.99.1
Scan saved at 15:37:07, on 17/05/2007
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

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:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
C:\Program Files\Alwil Software\Avast4\ashServ.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\System32\FTRTSVC.exe
C:\WINDOWS\system32\lxctcoms.exe
C:\Program Files\MioNet\MioNetManager.exe
C:\Program Files\Fichiers communs\Microsoft Shared\Media Manager\airsvcu.exe
C:\Program Files\MioNet\jvm\bin\MioNet.exe
C:\WINDOWS\System32\snmp.exe
C:\WINDOWS\system32\svchost.exe
C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
C:\Program Files\Java\jre1.5.0\bin\jusched.exe
C:\Program Files\Synaptics\SynTP\SynTPLpr.exe
C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
C:\Program Files\iTunes\iTunesHelper.exe
C:\Program Files\QuickTime\qttask.exe
C:\Program Files\HPQ\Quick Launch Buttons\EabServr.exe
C:\Program Files\iPod\bin\iPodService.exe
C:\Program Files\HPQ\HP Wireless Assistant\HP Wireless Assistant.exe
C:\Program Files\Hewlett-Packard\HP Software Update\HPWuSchd.exe
C:\Program Files\HP\hpcoretech\hpcmpmgr.exe
C:\WINDOWS\system32\spool\drivers\w32x86\3\hpztsb09.exe
C:\Program Files\Hewlett-Packard\Digital Imaging\bin\hpotdd01.exe
C:\Program Files\Thomson\SpeedTouch USB\Dragdiag.exe
C:\Program Files\HPQ\SHARED\HPQWMI.exe
C:\Program Files\Google\Google Desktop Search\GoogleDesktop.exe
C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
C:\PROGRA~1\Wanadoo\TaskBarIcon.exe
C:\Program Files\Adobe\Photoshop Album Edition Découverte\3.0\Apps\apdproxy.exe
C:\Program Files\Real\RealPlayer\RealPlay.exe
C:\Program Files\Google\Google Desktop Search\GoogleDesktopIndex.exe
C:\Program Files\Fichiers communs\Logitech\QCDriver\LVCOMS.EXE
C:\Program Files\Lexmark 5400 Series\lxctmon.exe
C:\Program Files\Lexmark 5400 Series\ezprint.exe
C:\Program Files\Google\Google Desktop Search\GoogleDesktopDisplay.exe
C:\Program Files\Google\Google Desktop Search\GoogleDesktopCrawl.exe
C:\WINDOWS\VM_STI.EXE
C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\avgas.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\Google\GoogleToolbarNotifier\1.2.1128.5462\GoogleToolbarNotifier.exe
C:\Program Files\Orange HSS\Orange Desktop Search\OrangeDesktopSearch.exe
C:\PROGRA~1\Wanadoo\GestionnaireInternet.exe
C:\PROGRA~1\Wanadoo\ComComp.exe
C:\Program Files\Philips\Philips SPC210NC Webcam\TrayMin210.exe
C:\PROGRA~1\Wanadoo\Toaster.exe
C:\Program Files\WinZip\WZQKPICK.EXE
C:\PROGRA~1\Wanadoo\Inactivity.exe
C:\PROGRA~1\Wanadoo\PollingModule.exe
C:\Program Files\Sony\Sony Picture Utility\VolumeWatcher\SPUVolumeWatcher.exe
C:\WINDOWS\System32\ALERTM~1\ALERTM~1.EXE
C:\Program Files\Fichiers communs\Microsoft Shared\Works Shared\WkCalRem.exe
C:\PROGRA~1\Wanadoo\Watch.exe
C:\Program Files\Microsoft Office\Office\WINWORD.EXE
C:\WINDOWS\system32\MDM.EXE
C:\hijackthis.exe
C:\WINDOWS\system32\dumprep.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.orange.fr/portail
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = https://www.msn.com/fr-fr?cobrand=compaq-notebook.msn.com&ocid=HPDHP&pc=CPNTDF
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Window Title = Orange
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
R3 - URLSearchHook: Search Class - {08C06D61-F1F3-4799-86F8-BE1A89362C85} - C:\PROGRA~1\Wanadoo\SEARCH~1.DLL
O2 - BHO: Yahoo! Toolbar Helper - {02478D38-C3F9-4EFB-9B51-7695ECA05670} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O2 - BHO: Aide pour le lien d'Adobe PDF Reader - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Fichiers communs\Adobe\Acrobat\ActiveX\AcroIEHelper.dll
O2 - BHO: Lexmark Barre d'outils - {1017A80C-6F09-4548-A84D-EDD6AC9525F0} - C:\Program Files\Lexmark Toolbar\toolband.dll
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - c:\program files\google\googletoolbar2.dll
O3 - Toolbar: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\program files\google\googletoolbar2.dll
O3 - Toolbar: Lexmark Barre d'outils - {1017A80C-6F09-4548-A84D-EDD6AC9525F0} - C:\Program Files\Lexmark Toolbar\toolband.dll
O4 - HKLM\..\Run: [ATIPTA] C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Program Files\Java\jre1.5.0\bin\jusched.exe
O4 - HKLM\..\Run: [UpdateManager] "C:\Program Files\Fichiers communs\Sonic\Update Manager\sgtray.exe" /r
O4 - HKLM\..\Run: [SynTPLpr] C:\Program Files\Synaptics\SynTP\SynTPLpr.exe
O4 - HKLM\..\Run: [SynTPEnh] C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
O4 - HKLM\..\Run: [iTunesHelper] C:\Program Files\iTunes\iTunesHelper.exe
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [eabconfg.cpl] C:\Program Files\HPQ\Quick Launch Buttons\EabServr.exe /Start
O4 - HKLM\..\Run: [Cpqset] C:\Program Files\HPQ\Default Settings\cpqset.exe
O4 - HKLM\..\Run: [hpWirelessAssistant] "%ProgramFiles%\HPQ\HP Wireless Assistant\HP Wireless Assistant.exe"
O4 - HKLM\..\Run: [HP Software Update] "C:\Program Files\Hewlett-Packard\HP Software Update\HPWuSchd.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\hpztsb09.exe
O4 - HKLM\..\Run: [DeviceDiscovery] C:\Program Files\Hewlett-Packard\Digital Imaging\bin\hpotdd01.exe
O4 - HKLM\..\Run: [SpeedTouch USB Diagnostics] "C:\Program Files\Thomson\SpeedTouch USB\Dragdiag.exe" /icon
O4 - HKLM\..\Run: [IMJPMIG8.1] "C:\WINDOWS\IME\imjp8_1\IMJPMIG.EXE" /Spoil /RemAdvDef /Migration32
O4 - HKLM\..\Run: [MSPY2002] C:\WINDOWS\system32\IME\PINTLGNT\ImScInst.exe /SYNC
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: [WOOWATCH] C:\PROGRA~1\Wanadoo\Watch.exe
O4 - HKLM\..\Run: [WOOTASKBARICON] C:\PROGRA~1\Wanadoo\GestMaj.exe TaskBarIcon.exe
O4 - HKLM\..\Run: [Install5G] D:\Install.exe activation_wifi
O4 - HKLM\..\Run: [Google Desktop Search] "C:\Program Files\Google\Google Desktop Search\GoogleDesktop.exe" /startup
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [Adobe Photo Downloader] "C:\Program Files\Adobe\Photoshop Album Edition Découverte\3.0\Apps\apdproxy.exe"
O4 - HKLM\..\Run: [RealTray] C:\Program Files\Real\RealPlayer\RealPlay.exe SYSTEMBOOTHIDEPLAYER
O4 - HKLM\..\Run: [LVCOMS] C:\Program Files\Fichiers communs\Logitech\QCDriver\LVCOMS.EXE
O4 - HKLM\..\Run: [NeroCheck] C:\WINDOWS\system32\\NeroCheck.exe
O4 - HKLM\..\Run: [lxctmon.exe] "C:\Program Files\Lexmark 5400 Series\lxctmon.exe"
O4 - HKLM\..\Run: [Lexmark 5400 Series Fax Server] "C:\Program Files\Lexmark 5400 Series\fm3032.exe" /s
O4 - HKLM\..\Run: [EzPrint] "C:\Program Files\Lexmark 5400 Series\ezprint.exe"
O4 - HKLM\..\Run: [LXCTCATS] rundll32 C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\LXCTtime.dll,_RunDLLEntry@16
O4 - HKLM\..\Run: [BigDogPath] C:\WINDOWS\VM_STI.EXE Philips SPC210NC Webcam
O4 - HKLM\..\Run: [!AVG Anti-Spyware] "C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\avgas.exe" /minimized
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [WOOKIT] C:\PROGRA~1\Wanadoo\Shell.exe appLaunchClientZone.shl|PARAM= cnx
O4 - HKCU\..\Run: [swg] C:\Program Files\Google\GoogleToolbarNotifier\1.2.1128.5462\GoogleToolbarNotifier.exe
O4 - HKCU\..\Run: [Orange Desktop Search] "C:\Program Files\Orange HSS\Orange Desktop Search\OrangeDesktopSearch.exe" /tray
O4 - Startup: Outil de détection de support de Cyber-shot Viewer.lnk = C:\Program Files\Sony\Sony Picture Utility\VolumeWatcher\SPUVolumeWatcher.exe
O4 - Startup: Présentation de Media Manager.lnk = C:\Program Files\Fichiers communs\Microsoft Shared\Media Manager\SPLASHA.EXE
O4 - Startup: wkcalrem.LNK = C:\Program Files\Fichiers communs\Microsoft Shared\Works Shared\WkCalRem.exe
O4 - Global Startup: Adobe Reader Synchronizer.lnk = C:\Program Files\Adobe\Reader 8.0\Reader\AdobeCollabSync.exe
O4 - Global Startup: Lancement rapide d'Adobe Reader.lnk = C:\Program Files\Adobe\Reader 8.0\Reader\reader_sl.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office\OSA9.EXE
O4 - Global Startup: TrayMin210.exe.lnk = C:\Program Files\Philips\Philips SPC210NC Webcam\TrayMin210.exe
O4 - Global Startup: WinZip Quick Pick.lnk = C:\Program Files\WinZip\WZQKPICK.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
O9 - Extra button: Real.com - {CD67F990-D8E9-11d2-98FE-00C0F0318AFE} - C:\WINDOWS\system32\Shdocvw.dll
O14 - IERESET.INF: START_PAGE_URL=https://www.msn.com/fr-fr?cobrand=compaq-notebook.msn.com&ocid=HPDHP&pc=CPNTDF
O16 - DPF: {5D86DDB5-BDF9-441B-9E9E-D4730F4EE499} (BDSCANONLINE Control) - http://download.bitdefender.com/resources/scan8/oscan8.cab
O16 - DPF: {8EB3FF4E-86A1-4717-884D-7BA2D38272CB} (F-Secure Online Scanner) - https://www.nordnet.com/securite
O16 - DPF: {917623D1-D8E5-11D2-BE8B-00104B06BDE3} (CamImage Class) - https://www.118712.fr/sortir/75_paris/sortir/
O16 - DPF: {9A9307A0-7DA4-4DAF-B042-5009F29E09E1} (ActiveScan Installer Class) - http://acs.pandasoftware.com/activescan/as5free/asinst.cab
O20 - AppInit_DLLs: C:\PROGRA~1\Google\GOOGLE~1\GOEC62~1.DLL
O20 - Winlogon Notify: WgaLogon - C:\WINDOWS\SYSTEM32\WgaLogon.dll
O21 - SSODL: WPDShServiceObj - {AAA288BA-9A4C-45B0-95D7-94D524869DB5} - C:\WINDOWS\system32\WPDShServiceObj.dll
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - ALWIL Software - C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: Ati HotKey Poller - ATI Technologies Inc. - C:\WINDOWS\system32\Ati2evxx.exe
O23 - Service: avast! Antivirus - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashServ.exe
O23 - Service: avast! Mail Scanner - Unknown owner - C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe" /service (file missing)
O23 - Service: avast! Web Scanner - Unknown owner - C:\Program Files\Alwil Software\Avast4\ashWebSv.exe" /service (file missing)
O23 - Service: AVG Anti-Spyware Guard - Anti-Malware Development a.s. - C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\guard.exe
O23 - Service: France Telecom Routing Table Service (FTRTSVC) - France Telecom - C:\WINDOWS\System32\FTRTSVC.exe
O23 - Service: Google Updater Service (gusvc) - Google - C:\Program Files\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: HP WMI Interface (hpqwmi) - Hewlett-Packard Development Company, L.P. - C:\Program Files\HPQ\SHARED\HPQWMI.exe
O23 - Service: iPod Service (iPodService) - Apple Computer, Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: lxct_device - - C:\WINDOWS\system32\lxctcoms.exe
O23 - Service: MioNet Service (MioNet) - Unknown owner - C:\Program Files\MioNet\MioNetManager.exe" -s "C:\Program Files\MioNet\wrapper.conf (file missing)