Problema: dopo aver scaricato una puntata di un telefilm con Limewire, e stupidamente accettato le condizioni, continuano ad apparirmi finestre nomate "Ads served by adssite" o "Ads served by rightonadz" per lo più pubblicitarie. internet va lentissimo, e va sempre peggio... l'antivirus non funziona, che cosa devo fare? [sn alle prime armi e ne so molto poco]
ecco il codice di Hijack:


Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 20.39.20, on 06/02/2008
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.6000.16574)
Boot mode: Normal

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\csrss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Programmi\File comuni\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
C:\Programmi\File comuni\Microsoft Shared\VS7DEBUG\MDM.EXE
C:\PROGRA~1\TRENDM~1\INTERN~1\PcCtlCom.exe
C:\WINDOWS\system32\svchost.exe
C:\PROGRA~1\TRENDM~1\INTERN~1\Tmntsrv.exe
C:\PROGRA~1\TRENDM~1\INTERN~1\TmPfw.exe
C:\PROGRA~1\TRENDM~1\INTERN~1\tmproxy.exe
C:\Programmi\iPod\bin\iPodService.exe
C:\PROGRA~1\TRENDM~1\INTERN~1\PcScnSrv.exe
C:\WINDOWS\System32\alg.exe
C:\Programmi\MSN Messenger\usnsvc.exe
C:\WINDOWS\Explorer.EXE
C:\Programmi\Java\jre1.5.0_08\bin\jusched.exe
C:\WINDOWS\stsystra.exe
C:\Programmi\CyberLink\PowerDVD\DVDLauncher.exe
C:\Programmi\Dell\Media Experience\DMXLauncher.exe
C:\Programmi\File comuni\InstallShield\UpdateService\issch.exe
C:\Programmi\Trend Micro\Internet Security 2007\pccguide.exe
C:\Programmi\iTunes\iTunesHelper.exe
C:\Programmi\Hewlett-Packard\OrderReminder\OrderReminder.exe
C:\WINDOWS\System32\Rundll32.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Programmi\Internet Explorer\IEXPLORE.EXE
C:\Programmi\File comuni\Ahead\Lib\NMBgMonitor.exe
C:\Programmi\Trend Micro\Internet Security 2007\TMAS_OE\TMAS_OEMon.exe
C:\Programmi\MSN Messenger\MsnMsgr.Exe
C:\Programmi\File comuni\Ahead\Lib\NMIndexStoreSvr.exe
C:\Programmi\File comuni\Microsoft Shared\Windows Live\WLLoginProxy.exe
C:\Programmi\Internet Explorer\iexplore.exe
C:\Programmi\Spyware Doctor\pctsAuxs.exe
C:\Programmi\Spyware Doctor\pctsSvc.exe
C:\Programmi\Spyware Doctor\pctsTray.exe
C:\Programmi\Java\jre1.5.0_08\bin\jucheck.exe
C:\Programmi\Spyware Doctor\pctsGui.exe
C:\Programmi\Internet Explorer\iexplore.exe
C:\Programmi\Trend Micro\HijackThis\HijackThis.exe
C:\WINDOWS\system32\wbem\wmiprvse.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.euro.dell.com/
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.allianzbank.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
R1 - HKCU\Software\Microsoft\Internet Connection Wizard,ShellNext = http://www.euro.dell.com/
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Collegamenti
O2 - BHO: Supporto di collegamento per Adobe PDF Reader - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Programmi\File comuni\Adobe\Acrobat\ActiveX\AcroIEHelper.dll
O2 - BHO: Adssite Search Assistant - {1648E328-3E5A-4EA5-A9C6-E5F09EE272DA} - C:\WINDOWS\system32\adssite_sidebar.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Programmi\Java\jre1.5.0_08\bin\ssv.dll
O2 - BHO: rightonads optimizer - {7D9362F8-77D8-4b29-97B5-621D550890C0} - C:\WINDOWS\system32\gzmrt.dll
O2 - BHO: (no name) - {7E853D72-626A-48EC-A868-BA8D5E23E045} - (no file)
O2 - BHO: Windows Live Sign-in Helper - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Programmi\File comuni\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: ads_optimizer - {9C8A568E-4201-478a-8536-526CF371D2E2} - C:\WINDOWS\system32\nst21.dll
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - c:\programmi\google\googletoolbar1.dll
O3 - Toolbar: (no name) - {BA52B914-B692-46c4-B683-905236F6F655} - (no file)
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\programmi\google\googletoolbar1.dll
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Programmi\Java\jre1.5.0_08\bin\jusched.exe"
O4 - HKLM\..\Run: [SigmatelSysTrayApp] stsystra.exe
O4 - HKLM\..\Run: [ATIPTA] C:\Programmi\ATI Technologies\ATI Control Panel\atiptaxx.exe
O4 - HKLM\..\Run: [DVDLauncher] "C:\Programmi\CyberLink\PowerDVD\DVDLauncher.exe"
O4 - HKLM\..\Run: [DMXLauncher] C:\Programmi\Dell\Media Experience\DMXLauncher.exe
O4 - HKLM\..\Run: [ISUSPM Startup] C:\PROGRA~1\FILECO~1\INSTAL~1\UPDATE~1\ISUSPM.exe -startup
O4 - HKLM\..\Run: [ISUSScheduler] "C:\Programmi\File comuni\InstallShield\UpdateService\issch.exe" -start
O4 - HKLM\..\Run: [pccguide.exe] "C:\Programmi\Trend Micro\Internet Security 2007\pccguide.exe"
O4 - HKLM\..\Run: [NeroFilterCheck] C:\Programmi\File comuni\Ahead\Lib\NeroCheck.exe
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Programmi\Adobe\Reader 8.0\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [QuickTime Task] "C:\Programmi\K-Lite Codec Pack\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [iTunesHelper] "C:\Programmi\iTunes\iTunesHelper.exe"
O4 - HKLM\..\Run: [OrderReminder] C:\Programmi\Hewlett-Packard\OrderReminder\OrderReminder.exe
O4 - HKLM\..\Run: [postSetupCheck] C:\WINDOWS\System32\Rundll32.exe "C:\WINDOWS\system32\gzmrt.dll" DllStart
O4 - HKLM\..\Run: [ISTray] "C:\Programmi\Spyware Doctor\pctsTray.exe"
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [BgMonitor_{79662E04-7C6C-4d9f-84C7-88D8A56B10AA}] "C:\Programmi\File comuni\Ahead\Lib\NMBgMonitor.exe"
O4 - HKCU\..\Run: [OE] "C:\Programmi\Trend Micro\Internet Security 2007\TMAS_OE\TMAS_OEMon.exe"
O4 - HKCU\..\Run: [MsnMsgr] "C:\Programmi\MSN Messenger\MsnMsgr.Exe" /background
O4 - HKCU\..\Run: [AdobeUpdater] C:\Programmi\File comuni\Adobe\Updater5\AdobeUpdater.exe
O4 - HKUS\S-1-5-19\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SERVIZIO LOCALE')
O4 - HKUS\S-1-5-20\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SERVIZIO DI RETE')
O4 - HKUS\S-1-5-21-711038147-3252382074-364433871-1008\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe (User 'Giulia')
O4 - HKUS\S-1-5-21-711038147-3252382074-364433871-1008\..\Run: [BgMonitor_{79662E04-7C6C-4d9f-84C7-88D8A56B10AA}] "C:\Programmi\File comuni\Ahead\Lib\NMBgMonitor.exe" (User 'Giulia')
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')
O8 - Extra context menu item: E&sporta in Microsoft Excel - res://C:\PROGRA~1\MICROS~3\OFFICE11\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Programmi\Java\jre1.5.0_08\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Programmi\Java\jre1.5.0_08\bin\ssv.dll
O9 - Extra button: Ricerche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~3\OFFICE11\REFIEBAR.DLL
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
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: {17492023-C23A-453E-A040-C7C580BBF700} (Windows Genuine Advantage Validation Tool) - http://go.microsoft.com/fwlink/?linkid=39204
O16 - DPF: {20A60F0D-9AFA-4515-A0FD-83BD84642501} (Checkers Class) - http://messenger.zone.msn.com/binary/msgrchkr.cab56986.cab
O16 - DPF: {4F1E5B1A-2A80-42CA-8532-2D05CB959537} (MSN Photo Upload Tool) - http://giuliaeloisa.spaces.live.com//PhotoUpload/MsnPUpld.cab
O16 - DPF: {5C051655-FCD5-4969-9182-770EA5AA5565} (Solitaire Showdown Class) - http://messenger.zone.msn.com/binary/SolitaireShowdown.cab56986.cab
O16 - DPF: {5D6F45B3-9043-443D-A792-115447494D24} (UnoCtrl Class) - http://messenger.zone.msn.com/IT-IT/a-UNO1/GAME_UNO1.cab
O16 - DPF: {7FC1B346-83E6-4774-8D20-1A6B09B0E737} (Windows Live Photo Upload Control) - http://robypaddy.spaces.live.com/PhotoUpload/MsnPUpld.cab
O16 - DPF: {B8BE5E93-A60C-4D26-A2DC-220313175592} (MSN Games - Installer) - http://messenger.zone.msn.com/binary/ZIntro.cab56649.cab
O16 - DPF: {C3F79A2B-B9B4-4A66-B012-3EE46475B072} (MessengerStatsClient Class) - http://messenger.zone.msn.com/binary/MessengerStatsPAClient.cab56907.cab
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://fpdownload2.macromedia.com/get/shockwave/cabs/flash/swflash.cab
O16 - DPF: {F5A7706B-B9C0-4C89-A715-7A0C6B05DD48} (Minesweeper Flags Class) - http://messenger.zone.msn.com/binary/MineSweeper.cab56986.cab
O23 - Service: Apple Mobile Device - Apple, Inc. - C:\Programmi\File comuni\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
O23 - Service: Ati HotKey Poller - Unknown owner - C:\WINDOWS\system32\Ati2evxx.exe
O23 - Service: Google Updater Service (gusvc) - Google - C:\Programmi\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Programmi\File comuni\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: Servizio iPod (iPod Service) - Apple Inc. - C:\Programmi\iPod\bin\iPodService.exe
O23 - Service: LVSrvLauncher - Logitech Inc. - C:\Programmi\File comuni\LogiShrd\SrvLnch\SrvLnch.exe
O23 - Service: NBService - Nero AG - C:\Programmi\Nero\Nero 7\Nero BackItUp\NBService.exe
O23 - Service: Trend Micro Central Control Component (PcCtlCom) - Trend Micro Inc. - C:\PROGRA~1\TRENDM~1\INTERN~1\PcCtlCom.exe
O23 - Service: Trend Micro Protection Against Spyware (PcScnSrv) - Trend Micro Inc. - C:\PROGRA~1\TRENDM~1\INTERN~1\PcScnSrv.exe
O23 - Service: PC Tools Auxiliary Service (sdAuxService) - PC Tools - C:\Programmi\Spyware Doctor\pctsAuxs.exe
O23 - Service: PC Tools Security Service (sdCoreService) - PC Tools - C:\Programmi\Spyware Doctor\pctsSvc.exe
O23 - Service: Trend Micro Real-time Service (Tmntsrv) - Trend Micro Inc. - C:\PROGRA~1\TRENDM~1\INTERN~1\Tmntsrv.exe
O23 - Service: Trend Micro Personal Firewall (TmPfw) - Trend Micro Inc. - C:\PROGRA~1\TRENDM~1\INTERN~1\TmPfw.exe
O23 - Service: Trend Micro Proxy Service (tmproxy) - Trend Micro Inc. - C:\PROGRA~1\TRENDM~1\INTERN~1\tmproxy.exe

--
End of file - 10830 bytes

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[vi ringrazio in anticipo] :)

mi par di capire che hai spyware a bordo......ma non temere...in questo forum circolano spy-killer di prim'ordine....solo un pò di pazienza.

Segui il consiglio di lui49, queste 4 righe non predicono nulla di buono.
O4 - HKLM\..\Run: [postSetupCheck] C:\WINDOWS\System32\Rundll32.exe
"C:\WINDOWS\system32\gzmrt.dll" DllStart

O2 - BHO: ads_optimizer - {9C8A568E-4201-478a-8536-526CF371D2E2} -
C:\WINDOWS\system32\nst21.dll

O2 - BHO: (no name) - {7E853D72-626A-48EC-A868-BA8D5E23E045} - (no file)

O2 - BHO: rightonads optimizer - {7D9362F8-77D8-4b29-97B5-621D550890C0} -
C:\WINDOWS\system32\gzmrt.dll

O2 - BHO: Adssite Search Assistant - {1648E328-3E5A-4EA5-A9C6-E5F09EE272DA}
C:\WINDOWS\system32\adssite_sidebar.dll