ok donc voici mon petit rapport hijack apres desinstalle de IE7 
  
ogfile of HijackThis v1.99.1 
Scan saved at 13:18:25, on 02/04/2007 
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\svchost.exe 
C:\WINDOWS\System32\svchost.exe 
C:\WINDOWS\system32\spoolsv.exe 
C:\WINDOWS\Explorer.EXE 
C:\WINDOWS\system32\RunDLL32.exe 
C:\PROGRA~1\Avast4\ashDisp.exe 
C:\WINDOWS\system32\ctfmon.exe 
C:\Program Files\Messenger\msmsgs.exe 
C:\Program Files\Avast4\aswUpdSv.exe 
C:\Program Files\Avast4\ashServ.exe 
C:\WINDOWS\system32\nvsvc32.exe 
C:\Program Files\Avast4\ashMaiSv.exe 
C:\Program Files\Avast4\ashWebSv.exe 
C:\Program Files\Internet Explorer\iexplore.exe 
C:\Documents and Settings\fixe\Mes documents\Programmes\hijackthis_hijackthis_1.99.1_anglais_17891.exe 
  
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.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 
O2 - BHO: (no name) - {7E853D72-626A-48EC-A868-BA8D5E23E045} - (no file) 
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\system32\NvCpl.dll,NvStartup 
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install 
O4 - HKLM\..\Run: [NvMediaCenter] RunDLL32.exe NvMCTray.dll,NvTaskbarInit 
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\Avast4\ashDisp.exe 
O4 - HKLM\..\Run: [KernelFaultCheck] %systemroot%\system32\dumprep 0 -k 
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe 
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background 
O4 - HKCU\..\Run: [skype] "C:\Program Files\Skype\Phone\Skype.exe" /nosplash /minimized 
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/...b?1175167793671 
O16 - DPF: {74D05D43-3236-11D4-BDCD-00C04F9A3B61} (HouseCall Control) - http://a840.g.akamai.net/7/840/537/2005111...all/xscan53.cab 
O18 - Protocol: livecall - {828030A1-22C1-4009-854F-8E305202313F} - C:\PROGRA~1\MSNMES~1\MSGRAP~1.DLL 
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - C:\PROGRA~1\MSNMES~1\MSGRAP~1.DLL 
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\PROGRA~1\FICHIE~1\Skype\SKYPE4~1.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) - Unknown owner - C:\Program Files\Avast4\aswUpdSv.exe 
O23 - Service: avast! Antivirus - Unknown owner - C:\Program Files\Avast4\ashServ.exe 
O23 - Service: avast! Mail Scanner - Unknown owner - C:\Program Files\Avast4\ashMaiSv.exe" /service (file missing) 
O23 - Service: avast! Web Scanner - Unknown owner - C:\Program Files\Avast4\ashWebSv.exe" /service (file missing) 
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\system32\nvsvc32.exe 
  
je reste a l'ecoute de vos suggestions , a noter que je ne gere pas grand chose en matiere d'interpretation hijack, petite precision encore dans le rapport d'erreur windows mes erreur avaient les ID 1000 puis 1001 puis 1002 et cela aleatoirement lors des plantages. 
a tres bientot