salve a tutti, ho questo problema e spero che voi gentilmente me lo risolviate.
Uso mozilla firefox, e da qualche giorno mi succede che non riesco a tenere sempre la mia home page, nel senso che quando ila imposto questa rimane, ma quando chiudo il broswer e lo riapro succedono cose strane come la comparsa di una pagina bianca col nome about:blank.
ho provato in tutti i modi, antivirus, combofix, etc. etc.. ma niente.
cosa fare?

posto log di HiJackThis se questo puo' servire, logicamente attendo vostre risposte.

grazie.





Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 14.49.14, on 23/05/2010
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v8.00 (8.00.6001.18702)
Boot mode: Normal

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\Programmi\USB Safely Remove\USBSRService.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\Programmi\LSoft Technologies Inc\Active@ Hard Disk Monitor\DiskMonitorService.exe
C:\Programmi\Java\jre6\bin\jqs.exe
C:\Programmi\Eset\nod32kui.exe
C:\WINDOWS\Dit.exe
C:\Programmi\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe
C:\Programmi\Vista Start Menu\VistaStartMenu.exe
C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_FATIAHE.EXE
C:\Programmi\Eset\nod32krn.exe
C:\Programmi\USB Safely Remove\USBSafelyRemove.exe
C:\Programmi\IncrediMail\bin\IncMail.exe
C:\WINDOWS\System32\svchost.exe
C:\Programmi\Logitech\SetPoint\SetPoint.exe
C:\Programmi\File comuni\Logishrd\KHAL2\KHALMNPR.EXE
C:\Programmi\IncrediMail\bin\IMApp.exe
C:\WINDOWS\system32\ctfmon.exe
C:\PROGRA~1\FREEDO~1\fdm.exe
C:\Programmi\Mozilla Firefox\firefox.exe
C:\Documents and Settings\Proprietario\Desktop\HiJackThis\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.it/
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 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page =
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page =
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = local
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Collegamenti
O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Programmi\File comuni\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O2 - BHO: Browser Defender BHO - {2A0F3D1B-0909-4FF4-B272-609CCE6054E7} - (no file)
O2 - BHO: PXCIEaddin - {42DFA04F-0F16-418e-B80C-AB97A5AFAD39} - C:\Programmi\Tracker Software\PDF-XChange 4\PXCIEAddin4.dll
O2 - BHO: DriveLetterAccess - {5CA3D70E-1895-11CF-8E15-001234567890} - C:\WINDOWS\system32\dla\tfswshx.dll
O2 - BHO: Groove GFS Browser Helper - {72853161-30C5-4D22-B7F9-0BBC1D38A37E} - C:\Programmi\Microsoft Office\Office12\GrooveShellExtensions.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Programmi\Java\jre6\bin\ssv.dll
O2 - BHO: Google Toolbar Notifier BHO - {AF69DE43-7D58-4638-B6FA-CE66B5AD205D} - C:\Programmi\Google\GoogleToolbarNotifier\5.4.4525.1752\swg.dll
O2 - BHO: FDMIECookiesBHO Class - {CC59E0F9-7E43-44FA-9FAA-8377850BF205} - C:\Programmi\Free Download Manager\iefdm2.dll
O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Programmi\Java\jre6\bin\jp2ssv.dll
O2 - BHO: JQSIEStartDetectorImpl - {E7E6F031-17CE-4C07-BC86-EABFE594F69C} - C:\Programmi\Java\jre6\lib\deploy\jqs\ie\jqs_plugin.dll
O3 - Toolbar: Barra degli Strumenti di IdiomaX - {477A7A3C-8B11-4B02-ADD1-7A01C4D00FA2} - C:\Programmi\File comuni\IdiomaX Shared\Cat 6.0\TrdIEAddIn.dll
O3 - Toolbar: QT Breadcrumbs Address Bar - {af83e43c-dd2b-4787-826b-31b17dee52ed} - mscoree.dll (file missing)
O3 - Toolbar: PDFXChange 4.0 IE Plugin - {42DFA04F-0F16-418e-B80C-AB97A5AFAD39} - C:\Programmi\Tracker Software\PDF-XChange 4\PXCIEAddin4.dll
O3 - Toolbar: PC Tools Browser Guard - {472734EA-242A-422B-ADF8-83D1E48CC825} - (no file)
O4 - HKLM\..\Run: [OutpostMonitor] C:\PROGRA~1\Agnitum\OUTPOS~1\op_mon.exe /tray /noservice
O4 - HKLM\..\Run: [OutpostFeedBack] "C:\Programmi\Agnitum\Outpost Firewall Pro\feedback.exe" /dump:os_startup
O4 - HKLM\..\Run: [nod32kui] "C:\Programmi\Eset\nod32kui.exe" /WAITSERVICE
O4 - HKLM\..\Run: [Dit] Dit.exe
O4 - HKCU\..\Run: [swg] "C:\Programmi\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe"
O4 - HKCU\..\Run: [VistaStartMenu] C:\Programmi\Vista Start Menu\VistaStartMenu.exe
O4 - HKCU\..\Run: [EPSON Stylus Photo R240 Series] C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_FATIAHE.EXE /P30 "EPSON Stylus Photo R240 Series" /M "Stylus Photo R240" /EF "HKCU"
O4 - HKCU\..\Run: [USB Safely Remove] C:\Programmi\USB Safely Remove\USBSafelyRemove.exe /startup
O4 - HKCU\..\Run: [IncrediMail] C:\Programmi\IncrediMail\bin\IncMail.exe /c
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKUS\S-1-5-18\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\CTFMON.EXE (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\CTFMON.EXE (User 'Default user')
O4 - Startup: ERUNT AutoBackup.lnk = C:\Programmi\ERUNT\AUTOBACK.EXE
O4 - Global Startup: Logitech SetPoint.lnk = C:\Programmi\Logitech\SetPoint\SetPoint.exe
O8 - Extra context menu item: E&sporta in Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office12\EXCEL.EXE/3000
O8 - Extra context menu item: Scarica con Free Download Manager - file://C:\Programmi\Free Download Manager\dllink.htm
O8 - Extra context menu item: Scarica i video con Free Download Manager - file://C:\Programmi\Free Download Manager\dlfvideo.htm
O8 - Extra context menu item: Scarica selezionati con Free Download Manager - file://C:\Programmi\Free Download Manager\dlselected.htm
O8 - Extra context menu item: Scarica tutto con Free Download Manager - file://C:\Programmi\Free Download Manager\dlall.htm
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Programmi\Java\jre6\bin\jp2iexp.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Programmi\Java\jre6\bin\jp2iexp.dll
O9 - Extra button: Invia a OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\PROGRA~1\MICROS~2\Office12\ONBttnIE.dll
O9 - Extra 'Tools' menuitem: I&nvia a OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\PROGRA~1\MICROS~2\Office12\ONBttnIE.dll
O9 - Extra button: Outpost Firewall Pro Quick Tune - {44627E97-789B-40d4-B5C2-58BD171129A1} - C:\Programmi\Agnitum\Outpost Firewall Pro\ie_bar.dll
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\Office12\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: Mostra/Nascondi Barra di Traduzione - {FE768A8F-9F88-4511-B28B-552ED2F6B500} - C:\Programmi\File comuni\IdiomaX Shared\Cat 6.0\TrdIEAddIn.dll
O17 - HKLM\System\CCS\Services\Tcpip\..\{CAB0FFDF-0042-454F-8FE4-389B7101D9F0}: NameServer = 85.37.17.43 85.38.28.96
O18 - Protocol: grooveLocalGWS - {88FED34C-F0CA-4636-A375-3CB6248B04CD} - C:\Programmi\Microsoft Office\Office12\GrooveSystemServices.dll
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\PROGRA~1\FILECO~1\Skype\SKYPE4~1.DLL
O23 - Service: Acronis Scheduler2 Service (AcrSch2Svc) - Unknown owner - C:\Programmi\File comuni\Acronis\Schedule2\schedul2.exe (file missing)
O23 - Service: Agnitum Client Security Service (acssrv) - Agnitum Ltd. - C:\PROGRA~1\Agnitum\OUTPOS~1\acs.exe
O23 - Service: Active@ Disk Monitor - LSoft Technologies Inc - C:\Programmi\LSoft Technologies Inc\Active@ Hard Disk Monitor\DiskMonitorService.exe
O23 - Service: Ati HotKey Poller - ATI Technologies Inc. - C:\WINDOWS\system32\Ati2evxx.exe
O23 - Service: ATI Smart - Unknown owner - C:\WINDOWS\system32\ati2sgag.exe
O23 - Service: Google Software Updater (gusvc) - Unknown owner - C:\Programmi\Google\Common\Google Updater\GoogleUpdaterService.exe (file missing)
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Programmi\File comuni\InstallShield\Driver\1150\Intel 32\IDriverT.exe
O23 - Service: Java Quick Starter (JavaQuickStarterService) - Sun Microsystems, Inc. - C:\Programmi\Java\jre6\bin\jqs.exe
O23 - Service: Logitech Bluetooth Service (LBTServ) - Logitech, Inc. - C:\Programmi\File comuni\Logishrd\Bluetooth\LBTServ.exe
O23 - Service: Network WanMiniport First Position - Unknown owner - C:\Programmi\Telecom Italia\WanMiniport1st\srvany.exe (file missing)
O23 - Service: NMIndexingService - Nero AG - C:\Programmi\File comuni\Nero\Lib\NMIndexingService.exe
O23 - Service: NOD32 Kernel Service (NOD32krn) - Eset - C:\Programmi\Eset\nod32krn.exe
O23 - Service: SiSoftware Deployment Agent Service (SandraAgentSrv) - SiSoftware - C:\Programmi\SiSoftware\SiSoftware Sandra Lite 2010c\RpcAgentSrv.exe
O23 - Service: ServiceLayer - Nokia. - C:\Programmi\File comuni\PCSuite\Services\ServiceLayer.exe
O23 - Service: USB Safely Remove Assistant (USBSafelyRemoveService) - Unknown owner - C:\Programmi\USB Safely Remove\USBSRService.exe

--
End of file - 9313 bytes

Come rimuovere about: blank

in attesa degli esperti,aggiorna il service pack,il log controllalo qui,ciao

http://www.hijackthis.de/

ho risolto.
era un problema con incredimail versione 2 (ultima), la quale installava motore di ricerca ask e qualcos'altro che non ricordo.
disinstallato tutto , pulito registro , installata versione vecchia la quale è pulita da altre installazioni, e adesso funziona tutto bene.
vi ringrazio lo stesso per la vostra gentilezza.