da qualche tempo ho qualche probblema con il file [Norton SpySweeper AutoUpdate] navsw.exe che si prende tutta la cpu.
invio il log di hijackthis.
aiutatemi,per favore

Logfile of HijackThis v1.98.2
Scan saved at 18.51.43, on 29/09/2004
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:\Programmi\File comuni\Symantec Shared\ccEvtMgr.exe
C:\WINDOWS\system32\cisvc.exe
C:\Programmi\File comuni\Microsoft Shared\VS7DEBUG\MDM.EXE
C:\Programmi\Norton AntiVirus\navapsvc.exe
C:\WINDOWS\System32\nvsvc32.exe
C:\WINDOWS\System32\snmp.exe
C:\Programmi\Analog Devices\SoundMAX\SMAgent.exe
C:\WINDOWS\system32\carpserv.exe
C:\WINDOWS\system32\RUNDLL32.EXE
C:\Programmi\Analog Devices\SoundMAX\SMTray.exe
C:\Programmi\File comuni\Symantec Shared\ccApp.exe
C:\Programmi\SlySoft\CloneCD\CloneCDTray.exe
C:\WINDOWS\system32\navsw.exe
C:\WINDOWS\system32\ctfmon.exe
C:\PROGRA~1\INCRED~1\bin\IMApp.exe
C:\WINDOWS\system32\wuauclt.exe
C:\Programmi\MSN Messenger\msnmsgr.exe
C:\Programmi\IncrediMail\bin\IncMail.exe
C:\Programmi\Messenger\msmsgs.exe
C:\PROGRA~1\WinZip\winzip32.exe
C:\DOCUME~1\Giacomo\IMPOST~1\Temp\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://gw.aliceadsl.it/minisearch
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://gw.aliceadsl.it/home
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://gw.aliceadsl.it/home
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Window Title = Microsoft Internet Explorer fornito da Alice
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Collegamenti
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Programmi\Adobe\Acrobat 6.0\Reader\ActiveX\AcroIEHelper.dll
O2 - BHO: NAV Helper - {BDF3E430-B101-42AD-A544-FADC6B084872} - C:\Programmi\Norton AntiVirus\NavShExt.dll
O3 - Toolbar: Norton AntiVirus - {42CDD1BF-3FFB-4238-8AD1-7859DF00B1D6} - C:\Programmi\Norton AntiVirus\NavShExt.dll
O4 - HKLM\..\Run: [CARPService] carpserv.exe
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 C:\WINDOWS\System32\NvMcTray.dll,NvTaskbarInit
O4 - HKLM\..\Run: [Smapp] C:\Programmi\Analog Devices\SoundMAX\SMTray.exe
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [ccApp] "C:\Programmi\File comuni\Symantec Shared\ccApp.exe"
O4 - HKLM\..\Run: [ccRegVfy] "C:\Programmi\File comuni\Symantec Shared\ccRegVfy.exe"
O4 - HKLM\..\Run: [WSSAConfiguration] wmmon32.exe
O4 - HKLM\..\Run: [Microsoft Update Machine] memstat.exe
O4 - HKLM\..\Run: [Microsoft Update] muamgrd.exe
O4 - HKLM\..\Run: [System Update] C:\WINDOWS\System32\ypvgrn.exe
O4 - HKLM\..\Run: [Microsoft Secure Messenger.NET Service] securitychk.exe
O4 - HKLM\..\Run: [Cryptographic Service] C:\WINDOWS\System32\rqonj.exe
O4 - HKLM\..\Run: [CloneCDTray] "C:\Programmi\SlySoft\CloneCD\CloneCDTray.exe" /s
O4 - HKLM\..\Run: [Norton SpySweeper AutoUpdate] navsw.exe
O4 - HKLM\..\RunServices: [WSSAConfiguration] wmmon32.exe
O4 - HKLM\..\RunServices: [Microsoft Update Machine] memstat.exe
O4 - HKLM\..\RunServices: [Microsoft Update] muamgrd.exe
O4 - HKLM\..\RunServices: [Microsoft Secure Messenger.NET Service] securitychk.exe
O4 - HKLM\..\RunServices: [Norton SpySweeper AutoUpdate] navsw.exe
O4 - HKLM\..\RunOnce: [Norton SpySweeper AutoUpdate] navsw.exe
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [NvMediaCenter] RUNDLL32.EXE C:\WINDOWS\System32\NVMCTRAY.DLL,NvTaskbarInit
O4 - HKCU\..\Run: [Microsoft Update Machine] memstat.exe
O4 - HKCU\..\Run: [Norton SpySweeper AutoUpdate] navsw.exe
O4 - HKCU\..\Run: [Microsoft Secure Messenger.NET Service] securitychk.exe
O4 - HKCU\..\Run: [IncrediMail] C:\PROGRA~1\INCRED~1\bin\IncMail.exe /c
O4 - HKCU\..\RunOnce: [Norton SpySweeper AutoUpdate] navsw.exe
O8 - Extra context menu item: &Add animation to IncrediMail Style Box - C:\PROGRA~1\INCRED~1\bin\resources\WebMenuImg.htm
O8 - Extra context menu item: E&sporta in Microsoft Excel - res://C:\PROGRA~1\MICROS~3\OFFICE11\EXCEL.EXE/3000
O9 - Extra button: Ricerche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~3\OFFICE11\REFIEBAR.DLL
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Programmi\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Programmi\Messenger\msmsgs.exe
O9 - Extra button: Alice - {ECF809DA-CFD2-4059-B34B-55A2CCEDADBB} - http://gw.aliceadsl.it/alice (file missing) (HKCU)
O14 - IERESET.INF: START_PAGE_URL=http://gw.aliceadsl.it/home
O16 - DPF: {9A9307A0-7DA4-4DAF-B042-5009F29E09E1} (ActiveScan Installer Class) - http://www.pandasoftware.com/activescan/as5/asinst.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{3E4B4725-6EF0-492D-A904-25B3D9BD52D8}: NameServer = 217.141.250.206 151.99.125.1