per il log devo aspettare di tornare a casa, ora sto a lavoro
cmq grazie mille, proverò....ormai le ho tentate tutte

Eccomi, scusa la mia latitanza...comunque ti posto il log fatto con HijackThis:

Logfile of HijackThis v1.99.1
Scan saved at 23.13.58, on 08/04/2007
Platform: Windows 2000 SP4 (WinNT 5.00.2195)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

Running processes:
C:\WINNT\System32\smss.exe
C:\WINNT\system32\winlogon.exe
C:\WINNT\system32\services.exe
C:\WINNT\system32\lsass.exe
C:\WINNT\system32\svchost.exe
C:\WINNT\system32\spoolsv.exe
C:\Programmi\AntiVir PersonalEdition Classic\sched.exe
C:\Programmi\AntiVir PersonalEdition Classic\avguard.exe
C:\WINNT\System32\svchost.exe
C:\WINNT\system32\hidserv.exe
C:\WINNT\system32\nvsvc32.exe
C:\Programmi\File comuni\Sogou PXP\p2psvr.exe
C:\WINNT\system32\regsvc.exe
C:\WINNT\system32\MSTask.exe
C:\WINNT\System32\tcpsvcs.exe
C:\WINNT\System32\snmp.exe
C:\WINNT\system32\stisvc.exe
C:\WINNT\system32\ZONELABS\vsmon.exe
C:\WINNT\System32\WBEM\WinMgmt.exe
C:\WINNT\system32\svchost.exe
C:\WINNT\Explorer.EXE
C:\WINNT\system32\spool\drivers\w32x86\3\hpztsb04. exe
C:\Programmi\VIAudioi\SBADeck\ADeck.exe
C:\Programmi\File comuni\Real\Update_OB\realsched.exe
C:\Programmi\Java\jre1.5.0_06\bin\jusched.exe
C:\Programmi\Zone Labs\ZoneAlarm\zlclient.exe
C:\Programmi\V-Talk\V-Talk.exe
C:\WINNT\system32\rundll32.exe
C:\Programmi\DynDNS Updater\DynDNS.exe
C:\Programmi\Mozilla Firefox\firefox.exe
C:\Programmi\AntiVir PersonalEdition Classic\avgnt.exe
C:\Programmi\UTorrent\utorrent-1.6.1-beta-build-483.exe
C:\Programmi\Hijackthis\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = about:blank
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.it/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.microsoft.com/isapi/redi...er=6&ar=msnhome
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://www.microsoft.com/isapi/redi...=ie&ar=iesearch
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = about:blank
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.microsoft.com/isapi/redir.dll?prd={SUB_PRD}&clcid={SUB_CLSID}&pver={SUB_PVER}&ar=home
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = http://home.microsoft.com/access/autosearch.asp?p=%s
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Collegamenti
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Programmi\Java\jre1.5.0_06\bin\ssv.dll
O3 - Toolbar: @msdxmLC.dll,-1@1033,&Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINNT\system32\msdxm.ocx
O4 - HKLM\..\Run: [Synchronization Manager] mobsync.exe /logon
O4 - HKLM\..\Run: [HPDJ Taskbar Utility] C:\WINNT\system32\spool\drivers\w32x86\3\hpztsb04. exe
O4 - HKLM\..\Run: [AudioDeck] C:\Programmi\VIAudioi\SBADeck\ADeck.exe 1
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [TkBellExe] "C:\Programmi\File comuni\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Programmi\Java\jre1.5.0_06\bin\jusched.exe
O4 - HKLM\..\Run: [avgnt] "C:\Programmi\AntiVir PersonalEdition Classic\avgnt.exe" /min
O4 - HKLM\..\Run: [Zone Labs Client] C:\Programmi\Zone Labs\ZoneAlarm\zlclient.exe
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINNT\system32\NvCpl.dll,NvStartup
O4 - HKCU\..\Run: [Skype] "C:\Programmi\Skype\Phone\Skype.exe" /nosplash /minimized
O4 - HKCU\..\Run: [V-Talk] C:\Programmi\V-Talk\V-Talk.exe
O4 - HKCU\..\Run: [DynDNS Updater] "C:\Programmi\DynDNS Updater\DynDNS.exe"
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
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://update.microsoft.com/windows...b?1123250167189
O17 - HKLM\System\CCS\Services\Tcpip\..\{A26A41A0-C187-4778-A0A7-AA8BE0FD5446}: NameServer = 208.67.222.222,208.67.220.220
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\PROGRA~1\FILECO~1\Skype\SKYPE4~1.DLL
O23 - Service: AntiVir PersonalEdition Classic Scheduler (AntiVirScheduler) - Avira GmbH - C:\Programmi\AntiVir PersonalEdition Classic\sched.exe
O23 - Service: AntiVir PersonalEdition Classic Guard (AntiVirService) - AVIRA GmbH - C:\Programmi\AntiVir PersonalEdition Classic\avguard.exe
O23 - Service: Servizio amministrativo di Gestione disco logico (dmadmin) - VERITAS Software Corp. - C:\WINNT\System32\dmadmin.exe
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\WINNT\system32\nvsvc32.exe
O23 - Service: P4P Service - Sohu.com Inc. - C:\Programmi\File comuni\Sogou PXP\p2psvr.exe
O23 - Service: TrueVector Internet Monitor (vsmon) - Zone Labs, LLC - C:\WINNT\system32\ZONELABS\vsmon.exe

...si riesce a capire il problema? Sei la mia unica speranza :)

nessun aiuto?

e quando l'hai postata sta cosa?
aspetta che controllo...

fixa:
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = about:blank

per il resto il log è pulito... e non si può attribuire a quanto sopra detto il problema sul tuo hd esterno! boh :o

grazie per la risposta....comunque dubito che il problema sia il mio hard disk. L'ho provato su una decina di pc con diversi sistemi operativi e non ha mai dato problemi.
Purtroppo non so da che dipende, è una bella seccatura 'sta cosa...sigh.
Se ti dovesse venire in mente qualcosa dimmelo...non si sa mai, io non ho proprio le competenze in materia per risolvere il problema.
Grazie ancora