Ti ringrazio tantissimo... ora va estremamente meglio... solo una cosa, anzi due:

1. Tutto è tornato come prima, solo Messanger continua a non collegarsi. Come posso fare? Mi apre una finestra con scritto:"E' possibile che il firewall in uso impedisca la connessione di Windows Live Messanger al servizio. Controlla le impostazioni del firewall e le istruzioni del produttore per ulteriori informazioni".

2.Poi ti riposto il file log di HijachThis così magari mi dici se ora è tutto apposto.
Logfile of HijackThis v1.99.1
Scan saved at 20.11.25, on 04/03/2008
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:\Programmi\Panda Security\Panda Antivirus + Firewall 2008\pavsrv51.exe
C:\Programmi\Panda Security\Panda Antivirus + Firewall 2008\AVENGINE.EXE
C:\WINDOWS\system32\svchost.exe
C:\Programmi\Panda Security\Panda Antivirus + Firewall 2008\TPSrv.exe
C:\Programmi\Panda Security\Panda Antivirus + Firewall 2008\WebProxy.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Programmi\Bonjour\mDNSResponder.exe
C:\Programmi\File comuni\Microsoft Shared\VS7DEBUG\MDM.EXE
C:\WINDOWS\system32\nvsvc32.exe
C:\Programmi\Panda Security\Panda Antivirus + Firewall 2008\PsCtrls.exe
C:\Programmi\Panda Security\Panda Antivirus + Firewall 2008\PavFnSvr.exe
c:\programmi\panda security\panda antivirus + firewall 2008\firewall\PSHOST.EXE
C:\Programmi\Panda Security\Panda Antivirus + Firewall 2008\PsImSvc.exe
C:\Programmi\CyberLink\Shared files\RichVideo.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\Explorer.EXE
C:\Programmi\Analog Devices\SoundMAX\bak\Smax4.exe
C:\WINDOWS\system32\RUNDLL32.EXE
C:\WINDOWS\system32\rundll32.exe
C:\Programmi\DAEMON Tools\daemon.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Programmi\Windows Live\Messenger\msnmsgr.exe
C:\Programmi\Internet Explorer\iexplore.exe
C:\Programmi\WinRAR\WinRAR.exe
C:\DOCUME~1\GIANCA~1\IMPOST~1\Temp\Rar$EX00.218\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.libero.it/
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Collegamenti
O2 - BHO: EpsonToolBandKicker Class - {E99421FB-68DD-40F0-B4AC-B7027CAE2F1A} - C:\Programmi\EPSON\EPSON Web-To-Page\EPSON Web-To-Page.dll
O3 - Toolbar: EPSON Web-To-Page - {EE5D279F-081B-4404-994D-C6B60AAEBA6D} - C:\Programmi\EPSON\EPSON Web-To-Page\EPSON Web-To-Page.dll
O4 - HKLM\..\Run: [High Definition Audio Property Page Shortcut] HDAShCut.exe
O4 - HKLM\..\Run: [SoundMAX] "C:\Programmi\Analog Devices\SoundMAX\bak\Smax4.exe" /tray
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [NvMediaCenter] RUNDLL32.EXE C:\WINDOWS\system32\NvMcTray.dll,NvTaskbarInit
O4 - HKLM\..\Run: [AdslTaskBar] rundll32.exe stmctrl.dll,TaskBar
O4 - HKLM\..\Run: [DAEMON Tools] "C:\Programmi\DAEMON Tools\daemon.exe" -lang 1033
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [braviax] C:\WINDOWS\system32\braviax.exe
O8 - Extra context menu item: E&sporta in 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\jre1.6.0_03\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Programmi\Java\jre1.6.0_03\bin\ssv.dll
O9 - Extra button: Inserisci blog - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Programmi\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra 'Tools' menuitem: Inserisci &blog in Windows Live Writer - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Programmi\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra button: Ricerche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - %windir%\Network Diagnostic\xpnetdiag.exe (file missing)
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - %windir%\Network Diagnostic\xpnetdiag.exe (file missing)
O10 - Unknown file in Winsock LSP: c:\programmi\bonjour\mdnsnsp.dll
O16 - DPF: {20A60F0D-9AFA-4515-A0FD-83BD84642501} (Checkers Class) - http://messenger.zone.msn.com/binary/msgrchkr.cab56986.cab
O16 - DPF: {3EA4FA88-E0BE-419A-A732-9B79B87A6ED0} (CTVUAxCtrl Object) - http://dl.tvunetworks.com/TVUAx.cab
O16 - DPF: {7FC1B346-83E6-4774-8D20-1A6B09B0E737} (Windows Live Photo Upload Control) - http://cid-5771521151fce6d6.spaces.live.com/PhotoUpload/MsnPUpld.cab
O16 - DPF: {C3F79A2B-B9B4-4A66-B012-3EE46475B072} (MessengerStatsClient Class) - http://messenger.zone.msn.com/binary/MessengerStatsPAClient.cab56907.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{9617941A-4499-4CAE-8BA2-079A06488B3C}: NameServer = 85.37.17.57 85.38.28.80
O17 - HKLM\System\CCS\Services\Tcpip\..\{E484C652-CDE3-45AA-9248-3B498166B92A}: NameServer = 151.99.0.100
O17 - HKLM\System\CS1\Services\Tcpip\..\{9617941A-4499-4CAE-8BA2-079A06488B3C}: NameServer = 85.37.17.57 85.38.28.80
O18 - Protocol: linkscanner - {F274614C-63F8-47D5-A4D1-FBDDE494F8D1} - C:\Programmi\AVG\AVG8\avgpp.dll (file missing)
O18 - Protocol: livecall - {828030A1-22C1-4009-854F-8E305202313F} - C:\PROGRA~1\WI1F86~1\MESSEN~1\MSGRAP~1.DLL
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - C:\PROGRA~1\WI1F86~1\MESSEN~1\MSGRAP~1.DLL
O18 - Protocol: wlmailhtml - {03C514A3-1EFB-4856-9F99-10D7BE1653C0} - C:\Programmi\Windows Live\Mail\mailcomm.dll
O20 - Winlogon Notify: avldr - C:\WINDOWS\SYSTEM32\avldr.dll
O21 - SSODL: WPDShServiceObj - {AAA288BA-9A4C-45B0-95D7-94D524869DB5} - C:\WINDOWS\system32\WPDShServiceObj.dll
O23 - Service: ##Id_String1.6844F930_1628_4223_B5CC_5BB94B879762## (Bonjour Service) - Apple Computer, Inc. - C:\Programmi\Bonjour\mDNSResponder.exe
O23 - Service: FLEXnet Licensing Service - Macrovision Europe Ltd. - C:\Programmi\File comuni\Macrovision Shared\FLEXnet Publisher\FNPLicensingService.exe
O23 - Service: NBService - Nero AG - C:\Programmi\Nero\Nero 7\Nero BackItUp\NBService.exe
O23 - Service: NMIndexingService - Nero AG - C:\Programmi\File comuni\Ahead\Lib\NMIndexingService.exe
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\system32\nvsvc32.exe
O23 - Service: Panda Software Controller - Panda Software International - C:\Programmi\Panda Security\Panda Antivirus + Firewall 2008\PsCtrls.exe
O23 - Service: Panda Function Service (PAVFNSVR) - Panda Software International - C:\Programmi\Panda Security\Panda Antivirus + Firewall 2008\PavFnSvr.exe
O23 - Service: Panda Process Protection Service (PavPrSrv) - Panda Software - C:\Programmi\File comuni\Panda Software\PavShld\pavprsrv.exe
O23 - Service: Panda anti-virus service (PAVSRV) - Panda Software International - C:\Programmi\Panda Security\Panda Antivirus + Firewall 2008\pavsrv51.exe
O23 - Service: Panda Host Service (PSHost) - Panda Software International - c:\programmi\panda security\panda antivirus + firewall 2008\firewall\PSHOST.EXE
O23 - Service: Panda IManager Service (PSIMSVC) - Panda Software International - C:\Programmi\Panda Security\Panda Antivirus + Firewall 2008\PsImSvc.exe
O23 - Service: Cyberlink RichVideo Service(CRVS) (RichVideo) - Unknown owner - C:\Programmi\CyberLink\Shared files\RichVideo.exe
O23 - Service: Panda TPSrv (TPSrv) - Panda Software International - C:\Programmi\Panda Security\Panda Antivirus + Firewall 2008\TPSrv.exe

TI RINGRAZIO ANCORA!!!

Ho provato... ma non va... da metti il pallino è tutto diverso (compreso metti il pallino).
A me chiede per prima cosa una conferma, poi si apre un box bianco in cui ho provato a scrivere quelle due righe e poi fare execute!

Comunque quella stringa di braviax era rimasta per una mia dimenticanza... ora l'ho tolta... ma ancora niente.

ecco il nuovo log:
Logfile of HijackThis v1.99.1
Scan saved at 21.59.57, on 04/03/2008
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:\Programmi\Panda Security\Panda Antivirus + Firewall 2008\pavsrv51.exe
C:\Programmi\Panda Security\Panda Antivirus + Firewall 2008\AVENGINE.EXE
C:\WINDOWS\system32\svchost.exe
C:\Programmi\Panda Security\Panda Antivirus + Firewall 2008\TPSrv.exe
C:\Programmi\Panda Security\Panda Antivirus + Firewall 2008\WebProxy.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Programmi\Bonjour\mDNSResponder.exe
C:\Programmi\File comuni\Microsoft Shared\VS7DEBUG\MDM.EXE
C:\WINDOWS\system32\nvsvc32.exe
C:\Programmi\Panda Security\Panda Antivirus + Firewall 2008\PsCtrls.exe
C:\Programmi\Panda Security\Panda Antivirus + Firewall 2008\PavFnSvr.exe
c:\programmi\panda security\panda antivirus + firewall 2008\firewall\PSHOST.EXE
C:\Programmi\Panda Security\Panda Antivirus + Firewall 2008\PsImSvc.exe
C:\Programmi\CyberLink\Shared files\RichVideo.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\Explorer.EXE
C:\Programmi\Analog Devices\SoundMAX\bak\Smax4.exe
C:\WINDOWS\system32\RUNDLL32.EXE
C:\WINDOWS\system32\rundll32.exe
C:\Programmi\DAEMON Tools\daemon.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Programmi\Internet Explorer\iexplore.exe
C:\Programmi\Internet Explorer\iexplore.exe
C:\WINDOWS\system32\wuauclt.exe
C:\Programmi\SopCast\adv\SopAdver.exe
C:\Mauro\eMule\emule.exe
C:\Programmi\WinRAR\WinRAR.exe
C:\DOCUME~1\GIANCA~1\IMPOST~1\Temp\Rar$EX00.219\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.libero.it/
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Collegamenti
O2 - BHO: EpsonToolBandKicker Class - {E99421FB-68DD-40F0-B4AC-B7027CAE2F1A} - C:\Programmi\EPSON\EPSON Web-To-Page\EPSON Web-To-Page.dll
O3 - Toolbar: EPSON Web-To-Page - {EE5D279F-081B-4404-994D-C6B60AAEBA6D} - C:\Programmi\EPSON\EPSON Web-To-Page\EPSON Web-To-Page.dll
O4 - HKLM\..\Run: [High Definition Audio Property Page Shortcut] HDAShCut.exe
O4 - HKLM\..\Run: [SoundMAX] "C:\Programmi\Analog Devices\SoundMAX\bak\Smax4.exe" /tray
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [NvMediaCenter] RUNDLL32.EXE C:\WINDOWS\system32\NvMcTray.dll,NvTaskbarInit
O4 - HKLM\..\Run: [AdslTaskBar] rundll32.exe stmctrl.dll,TaskBar
O4 - HKLM\..\Run: [DAEMON Tools] "C:\Programmi\DAEMON Tools\daemon.exe" -lang 1033
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O8 - Extra context menu item: E&sporta in 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\jre1.6.0_03\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Programmi\Java\jre1.6.0_03\bin\ssv.dll
O9 - Extra button: Inserisci blog - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Programmi\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra 'Tools' menuitem: Inserisci &blog in Windows Live Writer - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Programmi\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra button: Ricerche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - %windir%\Network Diagnostic\xpnetdiag.exe (file missing)
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - %windir%\Network Diagnostic\xpnetdiag.exe (file missing)
O10 - Unknown file in Winsock LSP: c:\programmi\bonjour\mdnsnsp.dll
O16 - DPF: {20A60F0D-9AFA-4515-A0FD-83BD84642501} (Checkers Class) - http://messenger.zone.msn.com/binary/msgrchkr.cab56986.cab
O16 - DPF: {3EA4FA88-E0BE-419A-A732-9B79B87A6ED0} (CTVUAxCtrl Object) - http://dl.tvunetworks.com/TVUAx.cab
O16 - DPF: {7FC1B346-83E6-4774-8D20-1A6B09B0E737} (Windows Live Photo Upload Control) - http://cid-5771521151fce6d6.spaces.live.com/PhotoUpload/MsnPUpld.cab
O16 - DPF: {8FEFF364-6A5F-4966-A917-A3AC28411659} (SopCore Control) - http://www.coolstreaming.us/consolle/plug-in/SOPCORE.CAB
O16 - DPF: {C3F79A2B-B9B4-4A66-B012-3EE46475B072} (MessengerStatsClient Class) - http://messenger.zone.msn.com/binary/MessengerStatsPAClient.cab56907.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{9617941A-4499-4CAE-8BA2-079A06488B3C}: NameServer = 85.37.17.57 85.38.28.80
O17 - HKLM\System\CCS\Services\Tcpip\..\{E484C652-CDE3-45AA-9248-3B498166B92A}: NameServer = 151.99.0.100
O17 - HKLM\System\CS1\Services\Tcpip\..\{9617941A-4499-4CAE-8BA2-079A06488B3C}: NameServer = 85.37.17.57 85.38.28.80
O18 - Protocol: linkscanner - {F274614C-63F8-47D5-A4D1-FBDDE494F8D1} - C:\Programmi\AVG\AVG8\avgpp.dll (file missing)
O18 - Protocol: livecall - {828030A1-22C1-4009-854F-8E305202313F} - C:\PROGRA~1\WI1F86~1\MESSEN~1\MSGRAP~1.DLL
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - C:\PROGRA~1\WI1F86~1\MESSEN~1\MSGRAP~1.DLL
O18 - Protocol: wlmailhtml - {03C514A3-1EFB-4856-9F99-10D7BE1653C0} - C:\Programmi\Windows Live\Mail\mailcomm.dll
O20 - Winlogon Notify: avldr - C:\WINDOWS\SYSTEM32\avldr.dll
O21 - SSODL: WPDShServiceObj - {AAA288BA-9A4C-45B0-95D7-94D524869DB5} - C:\WINDOWS\system32\WPDShServiceObj.dll
O23 - Service: ##Id_String1.6844F930_1628_4223_B5CC_5BB94B879762## (Bonjour Service) - Apple Computer, Inc. - C:\Programmi\Bonjour\mDNSResponder.exe
O23 - Service: FLEXnet Licensing Service - Macrovision Europe Ltd. - C:\Programmi\File comuni\Macrovision Shared\FLEXnet Publisher\FNPLicensingService.exe
O23 - Service: NBService - Nero AG - C:\Programmi\Nero\Nero 7\Nero BackItUp\NBService.exe
O23 - Service: NMIndexingService - Nero AG - C:\Programmi\File comuni\Ahead\Lib\NMIndexingService.exe
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\system32\nvsvc32.exe
O23 - Service: Panda Software Controller - Panda Software International - C:\Programmi\Panda Security\Panda Antivirus + Firewall 2008\PsCtrls.exe
O23 - Service: Panda Function Service (PAVFNSVR) - Panda Software International - C:\Programmi\Panda Security\Panda Antivirus + Firewall 2008\PavFnSvr.exe
O23 - Service: Panda Process Protection Service (PavPrSrv) - Panda Software - C:\Programmi\File comuni\Panda Software\PavShld\pavprsrv.exe
O23 - Service: Panda anti-virus service (PAVSRV) - Panda Software International - C:\Programmi\Panda Security\Panda Antivirus + Firewall 2008\pavsrv51.exe
O23 - Service: Panda Host Service (PSHost) - Panda Software International - c:\programmi\panda security\panda antivirus + firewall 2008\firewall\PSHOST.EXE
O23 - Service: Panda IManager Service (PSIMSVC) - Panda Software International - C:\Programmi\Panda Security\Panda Antivirus + Firewall 2008\PsImSvc.exe
O23 - Service: Cyberlink RichVideo Service(CRVS) (RichVideo) - Unknown owner - C:\Programmi\CyberLink\Shared files\RichVideo.exe
O23 - Service: Panda TPSrv (TPSrv) - Panda Software International - C:\Programmi\Panda Security\Panda Antivirus + Firewall 2008\TPSrv.exe

la seconda che hai scritto mi serve... sto guardando una cosa su internet!

Adesso l'unico problema è msn, non riesco a disattivare il firewall di Panda... potrebbe essere questo? Ma questo c'era anche prima di oggi...

Ancora niente... non mi permette di collegarmi con Messanger: ho provato a disinstallarlo e reinstallarlo, ma niente.
Che può essere successo???
Ecco il testo dell'errore:
Numerosi tentativi di accesso a WLM non riusciti. E' possibile che il firewall in uso impedisca la connessione di WLM al servizio. Controlla le impostaizoni del firewall e le istruzioni del produttore per ulteriori informazioni
Codice errore: 80072efd

Ti ringrazio di tutto... ora è ripartito tutto... do dovuto disinstallare Panda Antivirus, ma adesso l'ho sostituito con un altro. Ancora grazie di tutto-