Sapreste dirmi come mai xp si ferma molto alla schermata di avvio? Forse è colpa di Zone Alarm ch ho appena installato oppure è qualche virus?
Vi do il log di hijackthis:, grazie mille:

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 12.43.31, on 20/02/2010
Platform: Windows XP SP3 (WinNT 5.01.2600)
MSIE: Internet Explorer v8.00 (8.00.6001.18702)
Boot mode: Normal

Running processes:
I:\WINDOWS\System32\smss.exe
I:\WINDOWS\system32\winlogon.exe
I:\WINDOWS\system32\services.exe
I:\WINDOWS\system32\lsass.exe
I:\WINDOWS\system32\nvsvc32.exe
I:\WINDOWS\system32\svchost.exe
I:\WINDOWS\System32\svchost.exe
I:\WINDOWS\system32\svchost.exe
I:\WINDOWS\system32\ZoneLabs\vsmon.exe
I:\WINDOWS\Explorer.EXE
I:\WINDOWS\system32\ctfmon.exe
I:\Programmi\CheckPoint\ZAForceField\IswSvc.exe
I:\WINDOWS\system32\spoolsv.exe
I:\Programmi\Avira\AntiVir Desktop\sched.exe
I:\Programmi\Avira\AntiVir Desktop\avguard.exe
I:\Programmi\CheckPoint\ZAForceField\ForceField.ex e
I:\Programmi\File comuni\ABBYY\FineReader\9.00\Licensing\PE\NetworkL icenseServer.exe
I:\Programmi\Java\jre6\bin\jqs.exe
I:\Programmi\File comuni\LightScribe\LSSrvc.exe
I:\WINDOWS\system32\lxducoms.exe
I:\Programmi\Malwarebytes' Anti-Malware\mbamservice.exe
I:\Programmi\File comuni\Nero\Nero BackItUp 4\NBService.exe
I:\WINDOWS\system32\svchost.exe
I:\WINDOWS\system32\SearchIndexer.exe
I:\WINDOWS\system32\wuauclt.exe
I:\WINDOWS\system32\wbem\wmiapsrv.exe
I:\WINDOWS\RTHDCPL.EXE
I:\Programmi\Microsoft Office\Office12\GrooveMonitor.exe
I:\Programmi\Adobe\Reader 9.0\Reader\Reader_sl.exe
I:\Programmi\Avira\AntiVir Desktop\avgnt.exe
I:\Programmi\Java\jre6\bin\jusched.exe
I:\Programmi\Malwarebytes' Anti-Malware\mbamgui.exe
I:\WINDOWS\system32\RUNDLL32.EXE
I:\Programmi\Zone Labs\ZoneAlarm\zlclient.exe
I:\Programmi\Spybot - Search & Destroy\TeaTimer.exe
I:\Programmi\Mozilla Firefox\firefox.exe
I:\WINDOWS\system32\wuauclt.exe
I:\WINDOWS\system32\SearchProtocolHost.exe
I:\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://go.microsoft.com/fwlink/?LinkId=69157
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://go.microsoft.com/fwlink/?LinkId=54896
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://go.microsoft.com/fwlink/?LinkId=69157
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =
R1 - HKCU\Software\Microsoft\Internet Connection Wizard,ShellNext = http://go.microsoft.com/fwlink/?LinkId=74005
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Collegamenti
O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - I:\Programmi\File comuni\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O2 - BHO: Groove GFS Browser Helper - {72853161-30C5-4D22-B7F9-0BBC1D38A37E} - I:\Programmi\Microsoft Office\Office12\GrooveShellExtensions.dll
O2 - BHO: ZoneAlarm Toolbar Registrar - {8A4A36C2-0535-4D2C-BD3D-496CB7EED6E3} - I:\Programmi\CheckPoint\ZAForceField\TrustChecker\ bin\TrustCheckerIEPlugin.dll
O2 - BHO: Guida per l'accesso a Windows Live - {9030D464-4C02-4ABF-8ECC-5164760863C6} - I:\Programmi\File comuni\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - I:\Programmi\Java\jre6\bin\jp2ssv.dll
O2 - BHO: JQSIEStartDetectorImpl - {E7E6F031-17CE-4C07-BC86-EABFE594F69C} - I:\Programmi\Java\jre6\lib\deploy\jqs\ie\jqs_plugi n.dll
O3 - Toolbar: ZoneAlarm Toolbar - {EE2AC4E5-B0B0-4EC6-88A9-BCA1A32AB107} - I:\Programmi\CheckPoint\ZAForceField\TrustChecker\ bin\TrustCheckerIEPlugin.dll
O4 - HKLM\..\Run: [RTHDCPL] RTHDCPL.EXE
O4 - HKLM\..\Run: [Alcmtr] ALCMTR.EXE
O4 - HKLM\..\Run: [GrooveMonitor] "I:\Programmi\Microsoft Office\Office12\GrooveMonitor.exe"
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "I:\Programmi\Adobe\Reader 9.0\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [avgnt] "I:\Programmi\Avira\AntiVir Desktop\avgnt.exe" /min
O4 - HKLM\..\Run: [SunJavaUpdateSched] "I:\Programmi\Java\jre6\bin\jusched.exe"
O4 - HKLM\..\Run: [Malwarebytes' Anti-Malware] "I:\Programmi\Malwarebytes' Anti-Malware\mbamgui.exe" /starttray
O4 - HKLM\..\Run: [QuickTime Task] "I:\Programmi\QuickTime\QTTask.exe" -atboottime
O4 - HKLM\..\Run: [nwiz] nwiz.exe /installquiet
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE I:\WINDOWS\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [NvMediaCenter] RUNDLL32.EXE I:\WINDOWS\system32\NvMcTray.dll,NvTaskbarInit
O4 - HKLM\..\Run: [ZoneAlarm Client] "I:\Programmi\Zone Labs\ZoneAlarm\zlclient.exe"
O4 - HKLM\..\Run: [ISW] "I:\Programmi\CheckPoint\ZAForceField\ForceField.e xe" /icon="hidden"
O4 - HKCU\..\Run: [ctfmon.exe] I:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [SpybotSD TeaTimer] I:\Programmi\Spybot - Search & Destroy\TeaTimer.exe
O4 - HKUS\S-1-5-20\..\Run: [CTFMON.EXE] I:\WINDOWS\system32\CTFMON.EXE (User 'SERVIZIO DI RETE')
O4 - HKUS\S-1-5-20\..\RunOnce: [_nltide_2] regsvr32 /s /n /i:U shell32 (User 'SERVIZIO DI RETE')
O4 - HKUS\S-1-5-18\..\Run: [CTFMON.EXE] I:\WINDOWS\system32\CTFMON.EXE (User 'SYSTEM')
O4 - HKUS\S-1-5-18\..\RunOnce: [_nltide_2] regsvr32 /s /n /i:U shell32 (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [CTFMON.EXE] I:\WINDOWS\system32\CTFMON.EXE (User 'Default user')
O4 - HKUS\.DEFAULT\..\RunOnce: [_nltide_2] regsvr32 /s /n /i:U shell32 (User 'Default user')
O4 - Global Startup: Windows Search.lnk = I:\Programmi\Windows Desktop Search\WindowsSearch.exe
O8 - Extra context menu item: E&sporta in Microsoft Excel - res://I:\PROGRA~1\MICROS~2\Office12\EXCEL.EXE/3000
O8 - Extra context menu item: Sothink SWF Catcher - I:\Programmi\File comuni\SourceTec\SWF Catcher\InternetExplorer.htm
O9 - Extra button: Invia a OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - I:\PROGRA~1\MICROS~2\Office12\ONBttnIE.dll
O9 - Extra 'Tools' menuitem: I&nvia a OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - I:\PROGRA~1\MICROS~2\Office12\ONBttnIE.dll
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - I:\PROGRA~1\MICROS~2\Office12\REFIEBAR.DLL
O9 - Extra button: Sothink SWF Catcher - {E19ADC6E-3909-43E4-9A89-B7B676377EE3} - I:\Programmi\File comuni\SourceTec\SWF Catcher\InternetExplorer.htm
O9 - Extra 'Tools' menuitem: Sothink SWF Catcher - {E19ADC6E-3909-43E4-9A89-B7B676377EE3} - I:\Programmi\File comuni\SourceTec\SWF Catcher\InternetExplorer.htm
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - I:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - I:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://www.update.microsoft.com/micr...?1260696163906
O16 - DPF: {6E32070A-766D-4EE6-879C-DC1FA91D2FC3} (MUWebControl Class) - http://www.update.microsoft.com/micr...?1260696140015
O16 - DPF: {C3F79A2B-B9B4-4A66-B012-3EE46475B072} (MessengerStatsClient Class) - http://messenger.zone.msn.com/binary...t.cab56907.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{05DEADC7-9034-417D-8B26-85AC9CC44F0A}: NameServer = 208.67.222.222,208.67.220.220
O17 - HKLM\System\CS1\Services\Tcpip\..\{10B8F39F-89DE-4621-81DF-BCEEB0419561}: NameServer = 208.67.222.222,208.67.220.220
O17 - HKLM\System\CS2\Services\Tcpip\..\{05DEADC7-9034-417D-8B26-85AC9CC44F0A}: NameServer = 208.67.222.222,208.67.220.220
O17 - HKLM\System\CS3\Services\Tcpip\..\{05DEADC7-9034-417D-8B26-85AC9CC44F0A}: NameServer = 208.67.222.222,208.67.220.220
O18 - Protocol: grooveLocalGWS - {88FED34C-F0CA-4636-A375-3CB6248B04CD} - I:\Programmi\Microsoft Office\Office12\GrooveSystemServices.dll
O23 - Service: ABBYY FineReader 9.0 PE Licensing Service (ABBYY.Licensing.FineReader.Professional.9.0) - ABBYY (BIT Software) - I:\Programmi\File comuni\ABBYY\FineReader\9.00\Licensing\PE\NetworkL icenseServer.exe
O23 - Service: Avira AntiVir Scheduler (AntiVirScheduler) - Avira GmbH - I:\Programmi\Avira\AntiVir Desktop\sched.exe
O23 - Service: Avira AntiVir Guard (AntiVirService) - Avira GmbH - I:\Programmi\Avira\AntiVir Desktop\avguard.exe
O23 - Service: ZoneAlarm Toolbar IswSvc (IswSvc) - Check Point Software Technologies - I:\Programmi\CheckPoint\ZAForceField\IswSvc.exe
O23 - Service: Java Quick Starter (JavaQuickStarterService) - Sun Microsystems, Inc. - I:\Programmi\Java\jre6\bin\jqs.exe
O23 - Service: LightScribeService Direct Disc Labeling Service (LightScribeService) - Hewlett-Packard Company - I:\Programmi\File comuni\LightScribe\LSSrvc.exe
O23 - Service: lxduCATSCustConnectService - Lexmark International, Inc. - I:\WINDOWS\System32\spool\DRIVERS\W32X86\3\\lxduse rv.exe
O23 - Service: lxdu_device - - I:\WINDOWS\system32\lxducoms.exe
O23 - Service: MBAMService - Malwarebytes Corporation - I:\Programmi\Malwarebytes' Anti-Malware\mbamservice.exe
O23 - Service: Nero BackItUp Scheduler 4.0 - Nero AG - I:\Programmi\File comuni\Nero\Nero BackItUp 4\NBService.exe
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - I:\WINDOWS\system32\nvsvc32.exe
O23 - Service: ServiceLayer - Nokia. - I:\Programmi\PC Connectivity Solution\ServiceLayer.exe
O23 - Service: TrueVector Internet Monitor (vsmon) - Check Point Software Technologies LTD - I:\WINDOWS\system32\ZoneLabs\vsmon.exe

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