ho fatto uno scan con hijack e mi da questo :

Logfile of HijackThis v1.99.1
Scan saved at 20.17.20, on 01/04/2006
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:\Programmi\Ahead\InCD\InCDsrv.exe
C:\Programmi\File comuni\Symantec Shared\ccSetMgr.exe
C:\Programmi\File comuni\Symantec Shared\ccEvtMgr.exe
C:\WINDOWS\Explorer.EXE
C:\Programmi\File comuni\Symantec Shared\ccProxy.exe
C:\Programmi\File comuni\Symantec Shared\SNDSrvc.exe
C:\Programmi\File comuni\Symantec Shared\SPBBC\SPBBCSvc.exe
C:\Programmi\File comuni\Symantec Shared\CCPD-LC\symlcsvc.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Programmi\Apache Group\Apache2\bin\Apache.exe
C:\Programmi\MySQL\MySQL Server 4.1\bin\mysqld-nt.exe
C:\Programmi\Norton Internet Security\Norton AntiVirus\navapsvc.exe
C:\WINDOWS\system32\nvsvc32.exe
C:\WINDOWS\System32\svchost.exe
C:\Programmi\Apache Group\Apache2\bin\Apache.exe
C:\WINDOWS\SOUNDMAN.EXE
C:\WINDOWS\system32\RUNDLL32.EXE
C:\Programmi\Ahead\InCD\InCD.exe
C:\Programmi\HP\HP Software Update\HPWuSchd2.exe
C:\Programmi\HP\hpcoretech\hpcmpmgr.exe
C:\Programmi\QuickTime\qttask.exe
C:\Programmi\Java\jre1.5.0_06\bin\jusched.exe
C:\WINDOWS\ALCWZRD.EXE
C:\Programmi\Skype@phone\Skype@phone.exe
C:\Programmi\File comuni\Symantec Shared\ccApp.exe
C:\Programmi\Messenger\msmsgs.exe
C:\Programmi\Skype\Phone\Skype.exe
C:\Programmi\HP\Digital Imaging\bin\hpqtra08.exe
C:\Programmi\Apache Group\Apache2\bin\ApacheMonitor.exe
C:\Programmi\HP\Digital Imaging\bin\hpqgalry.exe
C:\WINDOWS\system32\wuauclt.exe
C:\Documents and Settings\Roby\Desktop\Sicurezza\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://securityresponse.symantec.com/avcenter/fix_homepage
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Collegamenti
O1 - Hosts: localhost 127.0.0.1
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Programmi\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Programmi\Java\jre1.5.0_06\bin\ssv.dll
O2 - BHO: Norton Internet Security 2006 - {9ECB9560-04F9-4bbc-943D-298DDF1699E1} - C:\Programmi\File comuni\Symantec Shared\AdBlocking\NISShExt.dll
O2 - BHO: NAV Helper - {A8F38D8D-E480-4D52-B7A2-731BB6995FDD} - C:\Programmi\Norton Internet Security\Norton AntiVirus\NavShExt.dll
O3 - Toolbar: Norton Internet Security 2006 - {0B53EAC3-8D69-4b9e-9B19-A37C9A5676A7} - C:\Programmi\File comuni\Symantec Shared\AdBlocking\NISShExt.dll
O3 - Toolbar: Norton AntiVirus - {C4069E3A-68F1-403E-B40E-20066696354B} - C:\Programmi\Norton Internet Security\Norton AntiVirus\NavShExt.dll
O4 - HKLM\..\Run: [Collegamento alla pagina delle proprietà di High Definition Audio] HDAudPropShortcut.exe
O4 - HKLM\..\Run: [SoundMan] SOUNDMAN.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: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [InCD] C:\Programmi\Ahead\InCD\InCD.exe
O4 - HKLM\..\Run: [HP Software Update] "C:\Programmi\HP\HP Software Update\HPWuSchd2.exe"
O4 - HKLM\..\Run: [HP Component Manager] "C:\Programmi\HP\hpcoretech\hpcmpmgr.exe"
O4 - HKLM\..\Run: [QuickTime Task] "C:\Programmi\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Programmi\Java\jre1.5.0_06\bin\jusched.exe
O4 - HKLM\..\Run: [AlcWzrd] ALCWZRD.EXE
O4 - HKLM\..\Run: [Alcmtr] ALCMTR.EXE
O4 - HKLM\..\Run: [Skype@phone] C:\Programmi\Skype@phone\Skype@phone.exe
O4 - HKLM\..\Run: [ccApp] "C:\Programmi\File comuni\Symantec Shared\ccApp.exe"
O4 - HKLM\..\Run: [ControlPanel] C:\WINDOWS\system32\private.exe internat.dll,LoadMouseCarpetProfile
O4 - HKLM\..\Run: [Systems] C:\WINDOWS\system32\sysmon.exe
O4 - HKCU\..\Run: [MSMSGS] "C:\Programmi\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [NBJ] "C:\Programmi\Ahead\Nero BackItUp\NBJ.exe"
O4 - HKCU\..\Run: [updateMgr] C:\Programmi\Adobe\Acrobat 7.0\Reader\AdobeUpdateManager.exe AcRdB7_0_5 -reboot 1
O4 - HKCU\..\Run: [Skype] "C:\Programmi\Skype\Phone\Skype.exe" /nosplash /minimized
O4 - Global Startup: Avvio rapido di HP Image Zone.lnk = C:\Programmi\HP\Digital Imaging\bin\hpqthb08.exe
O4 - Global Startup: Avvio veloce di Adobe Reader.lnk = C:\Programmi\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O4 - Global Startup: HP Digital Imaging Monitor.lnk = C:\Programmi\HP\Digital Imaging\bin\hpqtra08.exe
O4 - Global Startup: Monitor Apache Servers.lnk = C:\Programmi\Apache Group\Apache2\bin\ApacheMonitor.exe
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Programmi\Java\jre1.5.0_06\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Programmi\Java\jre1.5.0_06\bin\ssv.dll
O9 - Extra button: Ricerche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\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
O16 - DPF: {42C559C0-2E84-11D5-A3C6-00010219529D} (siacapi-core-install) - https://portal.actalis.it/CA/Environment/Ellips/app/siacapi-core-install.cab
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://update.microsoft.com/windowsupdate/v6/V5Controls/en/x86/client/wuweb_site.cab?1128087552500
O17 - HKLM\System\CCS\Services\Tcpip\..\{7BB61CA9-8935-4CB2-99FE-C49BE1C6A7CA}: NameServer = 85.255.113.118,85.255.112.21
O17 - HKLM\System\CCS\Services\Tcpip\..\{B9355104-ECBF-45C7-B9E0-D8250A8BC7DA}: NameServer = 85.255.113.118,85.255.112.21
O17 - HKLM\System\CCS\Services\Tcpip\..\{D9CC5698-08D6-4F66-AC4D-DD91A0DA2F18}: NameServer = 85.255.113.118,85.255.112.21
O23 - Service: Apache2 - Unknown owner - C:\Programmi\Apache Group\Apache2\bin\Apache.exe" -k runservice (file missing)
O23 - Service: Symantec Event Manager (ccEvtMgr) - Symantec Corporation - C:\Programmi\File comuni\Symantec Shared\ccEvtMgr.exe
O23 - Service: Symantec Internet Security Password Validation (ccISPwdSvc) - Symantec Corporation - C:\Programmi\Norton Internet Security\ccPwdSvc.exe
O23 - Service: Symantec Network Proxy (ccProxy) - Symantec Corporation - C:\Programmi\File comuni\Symantec Shared\ccProxy.exe
O23 - Service: Symantec Settings Manager (ccSetMgr) - Symantec Corporation - C:\Programmi\File comuni\Symantec Shared\ccSetMgr.exe
O23 - Service: COM Host (comHost) - Symantec Corporation - C:\Programmi\Norton Internet Security\comHost.exe
O23 - Service: InCD Helper (InCDsrv) - Nero AG - C:\Programmi\Ahead\InCD\InCDsrv.exe
O23 - Service: MySQL - Unknown owner - C:\Programmi\MySQL\MySQL.exe (file missing)
O23 - Service: Servizio Auto-Protect di Norton AntiVirus (navapsvc) - Symantec Corporation - C:\Programmi\Norton Internet Security\Norton AntiVirus\navapsvc.exe
O23 - Service: Norton Protection Center Service (NSCService) - Symantec Corporation - C:\Programmi\File comuni\Symantec Shared\Security Console\NSCSRVCE.EXE
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\system32\nvsvc32.exe
O23 - Service: Pml Driver HPZ12 - HP - C:\WINDOWS\system32\HPZipm12.exe
O23 - Service: Symantec AVScan (SAVScan) - Symantec Corporation - C:\Programmi\Norton Internet Security\Norton AntiVirus\SAVScan.exe
O23 - Service: Symantec Network Drivers Service (SNDSrvc) - Symantec Corporation - C:\Programmi\File comuni\Symantec Shared\SNDSrvc.exe
O23 - Service: Symantec SPBBCSvc (SPBBCSvc) - Symantec Corporation - C:\Programmi\File comuni\Symantec Shared\SPBBC\SPBBCSvc.exe
O23 - Service: Symantec Core LC - Symantec Corporation - C:\Programmi\File comuni\Symantec Shared\CCPD-LC\symlcsvc.exe

credo ci sia qualcosa che non vA visto il comportamento del pc ...
grazie

Ciao ,
esegui queste operazioni

Disattiva il ripristino di configurazione, leggi qui come fare
http://www.aiutamici.com/software/view.asp?tipo=home&CodSw=257&SH=N

Riavvia in modalità provvisoria, leggi qui come fare
http://www.aiutamici.com/software/view.asp?tipo=home&CodSw=344&SH=N

apri HIJAC THIS ed elimina come indicato in questo articolo
http://www.aiutamici.com/software/descrizione.asp?CodSw=1175
le righe che seguono.

==================================
O1 - Hosts: localhost 127.0.0.1
-
O4 - HKLM\..\Run: [ControlPanel] C:\WINDOWS\system32\private.exe internat.dll,LoadMouseCarpetProfile
O4 - HKLM\..\Run: [Systems] C:\WINDOWS\system32\sysmon.exe
-
O16 - DPF: {42C559C0-2E84-11D5-A3C6-00010219529D} (siacapi-core-install) - https://portal.actalis.it/CA/Environment/Ellips/app/siacapi-core-install.cab
-
O17 - HKLM\System\CCS\Services\Tcpip\..\{7BB61CA9-8935-4CB2-99FE-C49BE1C6A7CA}: NameServer = 85.255.113.118,85.255.112.21
O17 - HKLM\System\CCS\Services\Tcpip\..\{B9355104-ECBF-45C7-B9E0-D8250A8BC7DA}: NameServer = 85.255.113.118,85.255.112.21
O17 - HKLM\System\CCS\Services\Tcpip\..\{D9CC5698-08D6-4F66-AC4D-DD91A0DA2F18}: NameServer = 85.255.113.118,85.255.112.21
O23 - Service: Apache2 - Unknown owner - C:\Programmi\Apache Group\Apache2\bin\Apache.exe" -k runservice (file missing)
-
O23 - Service: MySQL - Unknown owner - C:\Programmi\MySQL\MySQL.exe (file missing)
==================================

Con la funzione CERCA di Windows, cerca ed elimina questi file,
==================================
private.exe
internat.dll
sysmon.exe
==================================


Vai a PANNELLO DI CONTROLLO e clicca su OPZIONI INTERNET
nella finestra che si apre clicca i tre pulsanti
ELIMINA COOKIES - ELIMINA FILE - CANCELLA CRONOOLOGIA

al termine utilizza i programmi AD-AWARE e SPYBOT indicati in questo articolo
http://www.aiutamici.com/software/view.asp?tipo=home&CodSw=388&SH=N

Fai una scansione con questo programma
http://www.aiutamici.com/software/view.asp?tipo=home&CodSw=1286

sempre in modalità provvisoria fai una scansione Antivirus

quindi riavvia il computer e controlla se il problema e risolto, se e tutto OK riattiva il ripristino configurazione disattivato all'inizio di questa procedura e crea un nuovo punto di ripristino, leggi qui alla voce 8
http://www.aiutamici.com/software/view.asp?tipo=home&CodSw=170&SH=N

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Collaboratore Aiutamici