Navigation tres lente avec IE7 ou FIREFOX

Bonjour .
depuis qq temps ma navigation sur le net est tres lente que se soit avec IE7 ou FIREFOX.
VOICI MON LOG HIJACKTHIS:

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 09:00:49, on 08/09/2007
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.6000.16473)
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
E:\program files\avast\aswUpdSv.exe
E:\program files\avast\ashServ.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\RunDll32.exe
E:\PROGRA~1\avast\ashDisp.exe
C:\Program Files\Fichiers communs\InterVideo\DeviceService\DevSvc.exe
C:\Program Files\Neuf\Kit\WiFi\9wifi.exe
C:\WINDOWS\system32\ctfmon.exe
C:\WINDOWS\system32\nvsvc32.exe
C:\WINDOWS\system32\PnkBstrA.exe
C:\Program Files\Cyberlink\Shared files\RichVideo.exe
E:\program files\sunbelt\kpf4ss.exe
C:\WINDOWS\system32\svchost.exe
C:\Program Files\Fichiers communs\Ulead Systems\DVD\ULCDRSvr.exe
E:\program files\avast\ashMaiSv.exe
E:\program files\avast\ashWebSv.exe
E:\program files\sunbelt\kpf4gui.exe
C:\WINDOWS\system32\wscntfy.exe
E:\program files\sunbelt\kpf4gui.exe
E:\program files\Hijackthis 2.02\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.google.fr/?gws_rd=ssl
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - E:\PROGRA~1\SPYBOT~1\SDHelper.dll
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [Cmaudio] RunDll32 cmicnfg.cpl,CMICtrlWnd
O4 - HKLM\..\Run: [avast!] E:\PROGRA~1\avast\ashDisp.exe
O4 - HKLM\..\Run: [Autoconfigurateur WiFi Neuf] "C:\Program Files\Neuf\Kit\WiFi\9wifi.exe"
O4 - HKLM\..\Run: [UVS11 Preload] E:\program files\ulead VS 11 plus\uvPL.exe
O4 - HKLM\..\RunOnce: [WIAWizardMenu] RUNDLL32.EXE C:\WINDOWS\system32\sti_ci.dll,WiaCreateWizardMenu
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [EPSON Stylus DX4000 Series] C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_FATIBEE.EXE /FU "C:\WINDOWS\TEMP\E_S10E.tmp" /EF "HKCU"
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_02\bin\npjpi160_02.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_02\bin\npjpi160_02.dll
O16 - DPF: {67DABFBF-D0AB-41FA-9C46-CC0F21721616} (DivXBrowserPlugin Object) - http://download.divx.com/player/DivXBrowserPlugin.cab
O16 - DPF: {8167C273-DF59-4416-B647-C8BB2C7EE83E} (WebSDev Control) - http://liveupdate.msi.com.tw/autobios/LOnline/install.cab
O16 - DPF: {8AD9C840-044E-11D1-B3E9-00805F499D93} (Java Runtime Environment 1.6.0) - http://javadl-esd.sun.com/update/1.6.0/jinstall-6u2-windows-i586-jc.cab
O16 - DPF: {E8F628B5-259A-4734-97EE-BA914D7BE941} (Driver Agent ActiveX Control) - https://driveragent.com/files/driveragent.cab
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - ALWIL Software - E:\program files\avast\aswUpdSv.exe
O23 - Service: avast! Antivirus - ALWIL Software - E:\program files\avast\ashServ.exe
O23 - Service: avast! Mail Scanner - ALWIL Software - E:\program files\avast\ashMaiSv.exe
O23 - Service: avast! Web Scanner - ALWIL Software - E:\program files\avast\ashWebSv.exe
O23 - Service: Capture Device Service - InterVideo Inc. - C:\Program Files\Fichiers communs\InterVideo\DeviceService\DevSvc.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Fichiers communs\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\system32\nvsvc32.exe
O23 - Service: PnkBstrA - Unknown owner - C:\WINDOWS\system32\PnkBstrA.exe
O23 - Service: Cyberlink RichVideo Service(CRVS) (RichVideo) - Unknown owner - C:\Program Files\Cyberlink\Shared files\RichVideo.exe
O23 - Service: Sunbelt Personal Firewall 4 (SPF4) - Sunbelt Software - E:\program files\sunbelt\kpf4ss.exe
O23 - Service: Ulead Burning Helper (UleadBurningHelper) - Ulead Systems, Inc. - C:\Program Files\Fichiers communs\Ulead Systems\DVD\ULCDRSvr.exe