Ordi ralenti ... Envoi d'un Log

Bonjour,

Mon ordi est neuf, sous vista edition intégrale avec un AMD Athlon (tm) 64 X2 Dual core Processor5200 + 2.70 Ghz
Ma mémoire vive est de 1918 Mo. Et pourtant il rame donc je voudrais bien être éclairé par vos lanternes pour améliorer ses performances...

Voici le log :

Logfile of HijackThis v1.99.1
Scan saved at 18:45:46, on 24/12/2007
Platform: Unknown Windows (WinNT 6.00.1904)
MSIE: Internet Explorer v7.00 (7.00.6000.16575)

Running processes:
C:\Windows\system32\Dwm.exe
C:\Windows\Explorer.EXE
C:\Program Files\Windows Defender\MSASCui.exe
C:\Program Files\Orange HSS\Systray\SystrayApp.exe
F:\antivirus\ashDisp.exe
F:\Program Files\Zone Labs\ZoneAlarm\zlclient.exe
C:\Program Files\Common Files\PCSuite\DataLayer\DataLayer.exe
C:\Program Files\Nokia\Nokia PC Suite 6\TrayApplication.exe
C:\Program Files\Windows Sidebar\sidebar.exe
C:\Program Files\Orange HSS\Launcher\Launcher.exe
G:\BTTray.exe
G:\Kodak EasyShare software\bin\EasyShare.exe
C:\Program Files\Common Files\PCSuite\Services\ServiceLayer.exe
G:\BTSTAC~1.EXE
C:\Program Files\Nokia\Nokia PC Suite 6\ConnectionManager.exe
C:\Windows\system32\taskeng.exe
C:\Windows\system32\taskeng.exe
C:\Windows\system32\wuauclt.exe
F:\Mozilla Firefox\firefox.exe
C:\Program Files\Internet Explorer\ieuser.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Windows\system32\SearchFilterHost.exe
C:\Windows\system32\Macromed\Flash\FlashUtil9e.exe
C:\Program Files\Hijackthis Version Française\VERSION TRADUITE ORIGINALE.EXE

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = https://www.bing.com/?toHttps=1&redig=5FC791212101479BAFBE1A679848B1AF
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://internet%20explorer/
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 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
R3 - URLSearchHook: Search Class - {08C06D61-F1F3-4799-86F8-BE1A89362C85} - C:\Program Files\Orange HSS\SearchURLHook\SearchPageURL.dll
O1 - Hosts: ::1 localhost
O2 - BHO: Aide pour le lien d'Adobe PDF Reader - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelper.dll
O2 - BHO: (no name) - {7E853D72-626A-48EC-A868-BA8D5E23E045} - (no file)
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - c:\program files\google\googletoolbar1.dll
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\program files\google\googletoolbar1.dll
O4 - HKLM\..\Run: [Windows Defender] %ProgramFiles%\Windows Defender\MSASCui.exe -hide
O4 - HKLM\..\Run: [SystrayORAHSS] "C:\Program Files\Orange HSS\Systray\SystrayApp.exe"
O4 - HKLM\..\Run: [avast!] F:\ANTIVI~1\ashDisp.exe
O4 - HKLM\..\Run: [ZoneAlarm Client] "F:\Program Files\Zone Labs\ZoneAlarm\zlclient.exe"
O4 - HKLM\..\Run: [eCarteBleue-SG-P3] "G:\Acat\ECB-SG.exe" /dontopenmycards
O4 - HKLM\..\Run: [QuickTime Task] "F:\QTTask.exe" -atboottime
O4 - HKLM\..\Run: [DataLayer] C:\PROGRA~1\COMMON~1\PCSuite\DATALA~1\DATALA~1.EXE
O4 - HKLM\..\Run: [PCSuiteTrayApplication] C:\PROGRA~1\Nokia\NOKIAP~1\TRAYAP~1.EXE
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Program Files\Adobe\Reader 8.0\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [NeroFilterCheck] C:\Program Files\Common Files\Ahead\Lib\NeroCheck.exe
O4 - HKCU\..\Run: [Sidebar] C:\Program Files\Windows Sidebar\sidebar.exe /autoRun
O4 - HKCU\..\Run: [orahssStartup] "C:\Program Files\Orange HSS\Launcher\Launcher.exe" -appid connectivityapp
O4 - Global Startup: BTTray.lnk = ?
O4 - Global Startup: Logiciel Kodak EasyShare.lnk = G:\Kodak EasyShare software\bin\EasyShare.exe
O8 - Extra context menu item: Envoyer à &Bluetooth - G:\btsendto_ie_ctx.htm
O10 - Unknown file in Winsock LSP: c:\windows\system32\nlaapi.dll
O10 - Unknown file in Winsock LSP: c:\windows\system32\napinsp.dll
O11 - Options group: [INTERNATIONAL] International*
O13 - Gopher Prefix:
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - https://fpdownload.macromedia.com/get/shockwave/cabs/flash/swflash.cab
O18 - Protocol: livecall - {828030A1-22C1-4009-854F-8E305202313F} - C:\PROGRA~1\WI1F86~1\MESSEN~1\MSGRAP~1.DLL
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - C:\PROGRA~1\WI1F86~1\MESSEN~1\MSGRAP~1.DLL
O18 - Protocol: widimg - {EE7C2AFF-5742-44FF-BD0E-E521B0D3C3BA} - C:\Windows\system32\btxppanel.dll
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - ALWIL Software - F:\antivirus\aswUpdSv.exe
O23 - Service: avast! Antivirus - ALWIL Software - F:\antivirus\ashServ.exe
O23 - Service: avast! Mail Scanner - Unknown owner - F:\antivirus\ashMaiSv.exe" /service (file missing)
O23 - Service: avast! Web Scanner - Unknown owner - F:\antivirus\ashWebSv.exe" /service (file missing)
O23 - Service: Bluetooth Service (btwdins) - Broadcom Corporation - G:\bin\btwdins.exe
O23 - Service: @%SystemRoot%\ehome\ehstart.dll,-101 (ehstart) - Unknown owner - %windir%\system32\svchost.exe (file missing)
O23 - Service: Google Updater Service (gusvc) - Google - C:\Program Files\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: @%SystemRoot%\system32\qwave.dll,-1 (QWAVE) - Unknown owner - %windir%\system32\svchost.exe (file missing)
O23 - Service: @%SystemRoot%\system32\seclogon.dll,-7001 (seclogon) - Unknown owner - %windir%\system32\svchost.exe (file missing)
O23 - Service: TrueVector Internet Monitor (vsmon) - Check Point Software Technologies LTD - C:\Windows\System32\ZoneLabs\vsmon.exe
O23 - Service: @%ProgramFiles%\Windows Media Player\wmpnetwk.exe,-101 (WMPNetworkSvc) - Unknown owner - %ProgramFiles%\Windows Media Player\wmpnetwk.exe (file missing)

Merci beaucoup de votre aide.

Aura