Mauvais fonctionnement internet

bonjour a tous!
j'ai un probleme au niveau de ma connexion! au départ ça va mais après avoir afficher quelque pages. Il marque terminé et on ne peut plus rien faire;
j'ai eu quelque spyware et compagnie et j'ai installer plusieurs mais ça ne change rien.
voici mon log hijackthis
Logfile of HijackThis v1.99.1
Scan saved at 18:48:14, on 16/02/2006
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\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Friendly Technologies\BroadbandAccess\fts.exe
C:\WINDOWS\system32\spooIsv.exe
C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
C:\syitem32.exe
C:\Program Files\Webroot\Spy Sweeper\SpySweeper.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\Spybot - Search & Destroy\TeaTimer.exe
C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
C:\Program Files\Alwil Software\Avast4\ashServ.exe
C:\Program Files\Kerio\Personal Firewall 4\kpf4ss.exe
C:\Program Files\Webroot\Spy Sweeper\WRSSSDK.exe
C:\Program Files\Kerio\Personal Firewall 4\kpf4gui.exe
C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
C:\Program Files\Kerio\Personal Firewall 4\kpf4gui.exe
C:\WINDOWS\system32\wuauclt.exe
C:\DOCUME~1\aalami\LOCALS~1\Temp\R�ertoire temporaire 2 pour hijackthis_199.zip\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = about:blank
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.msn.fr/
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O4 - HKLM\..\Run: [%FP%Friendly fts.exe] "C:\Program Files\Friendly Technologies\BroadbandAccess\fts.exe"
O4 - HKLM\..\Run: [Spooler SubSystem App] C:\WINDOWS\system32\spooIsv.exe
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [ihost.exe] C:\syitem32.exe
O4 - HKLM\..\Run: [SpySweeper] "C:\Program Files\Webroot\Spy Sweeper\SpySweeper.exe" /startintray
O4 - HKLM\..\Run: [TrojanScanner] C:\Program Files\Trojan Remover\Trjscan.exe
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [SpybotSD TeaTimer] C:\Program Files\Spybot - Search & Destroy\TeaTimer.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office10\OSA.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://update.microsoft.com/windowsupdate/v6/V5Controls/en/x86/client/wuweb_site.cab?1139854105508
O20 - Winlogon Notify: WRNotifier - C:\WINDOWS\SYSTEM32\WRLogonNTF.dll
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - Unknown owner - C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: avast! Antivirus - Unknown owner - 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: Kerio Personal Firewall 4 (KPF4) - Kerio Technologies - C:\Program Files\Kerio\Personal Firewall 4\kpf4ss.exe
O23 - Service: Webroot Spy Sweeper Engine (svcWRSSSDK) - Webroot Software, Inc. - C:\Program Files\Webroot\Spy Sweeper\WRSSSDK.exe