Não consigo ativar o Antivir

Pessoal, há dois dias eu instalei o Service Pack do Windows Vista, e logo após o SO começou a reclamar que havia uma incompatibilidade com a versão do Antivir que eu vinha usando. Resolvi instalar a nova versão do Antivir e o problema foi resolvido, porém hoje notei que o anti-virus está desativado (o guarda-chuva do ícone do Antivir está fechado), e quando clico em Activate ele não ativa o anti-virus.

Outra coisa: há alguns dias um executável chamado mpclauncher.exe vem sendo detectado pelo sistema de segurança do Windows, e venho bloqueando sua execução. Abaixo os detalhes da caixa de segurança do Windows (quanto ao Real Alternative mencionado, já o desinstalei mas o problema persiste):

mpclauncher.exe
Unidentified Publisher
C:\Program Files\Real Alternative\mpclauncher.exe
/SPAWNWND=$3089A /NOTIFYWND=$3089A /runevent
"C:\Program Files\Common Files\Real\Update OB\u[gr3270.dll" AutoUpdateEvent

Abaixo segue o log do HijackThis:

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 10:27:28, on 25/09/2009
Platform: Windows Vista SP2 (WinNT 6.00.1906)
MSIE: Internet Explorer v8.00 (8.00.6001.18813)
Boot mode: Normal

Running processes:
C:\Windows\system32\taskeng.exe
C:\Windows\Explorer.EXE
C:\Windows\RtHDVCpl.exe
C:\Program Files\Toshiba\Power Saver\TPwrMain.exe
C:\Program Files\Toshiba\SmoothView\SmoothView.exe
C:\Program Files\Toshiba\FlashCards\TCrdMain.exe
C:\Program Files\Windows Defender\MSASCui.exe
C:\Program Files\Toshiba\Bluetooth Toshiba Stack\ItSecMng.exe
C:\Program Files\ATI Technologies\ATI.ACE\Core-Static\MOM.EXE
C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
C:\Program Files\Google\Google Desktop Search\GoogleDesktop.exe
C:\Program Files\CyberLink\PowerCinema for TOSHIBA\PCMAgent.exe
C:\Program Files\CyberLink\PowerCinema for TOSHIBA\Kernel\CLML\CLMLSvc.exe
C:\Program Files\Spyware Terminator\SpywareTerminatorShield.Exe
C:\Program Files\ATI Technologies\ATI.ACE\Core-Static\CCC.exe
C:\Program Files\Google\Gmail Notifier\gnotify.exe
C:\Program Files\NewSoft\Presto! PVR\Monitor.exe
C:\Program Files\BOINC\boincmgr.exe
C:\Program Files\BOINC\boinctray.exe
C:\Program Files\Avira\AntiVir Desktop\avgnt.exe
C:\Program Files\Toshiba\TOSCDSPD\TOSCDSPD.exe
C:\Program Files\Windows Sidebar\sidebar.exe
C:\Program Files\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe
C:\Windows\ehome\ehtray.exe
C:\Windows\ehome\ehmsas.exe
C:\Program Files\DAEMON Tools Lite\daemon.exe
C:\Program Files\MagicDisc\MagicDisc.exe
C:\Program Files\BOINC\boinc.exe
C:\Program Files\Synaptics\SynTP\SynTPHelper.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Windows\system32\conime.exe
C:\Windows\system32\taskeng.exe
C:\Program Files\Windows Live\Messenger\msnmsgr.exe
C:\Program Files\Windows Live\Contacts\wlcomm.exe
C:\Windows\system32\Dwm.exe
C:\Program Files\Common Files\Real\Update_OB\realsched.exe
C:\Program Files\Avira\AntiVir Desktop\avcenter.exe
C:\Program Files\Trend Micro\HijackThis\HijackThis.exe
C:\Windows\system32\SearchFilterHost.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.toshibadirect.com/dpdstart
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://go.microsoft.com/fwlink/?LinkId=69157
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.toshibadirect.com/dpdstart
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\Windows\CurrentVersion\Internet Settings,ProxyOverride = local
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
O1 - Hosts: ::1 localhost
O2 - BHO: Adobe PDF Reader Link Helper - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelper.dll
O2 - BHO: (no name) - {5C255C8A-E604-49b4-9D64-90988571CECB} - (no file)
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.6.0_03\bin\ssv.dll
O2 - BHO: Auxiliar de Conexão do Windows Live - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files\Common Files\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - C:\Program Files\Google\Google Toolbar\GoogleToolbar.dll
O2 - BHO: Google Toolbar Notifier BHO - {AF69DE43-7D58-4638-B6FA-CE66B5AD205D} - C:\Program Files\Google\GoogleToolbarNotifier\5.1.1309.15642\swg.dll
O2 - BHO: G-Buster Browser Defense - {C41A1C0E-EA6C-11D4-B1B8-444553540000} - C:\PROGRAM FILES\GBPLUGIN\gbieh.dll
O3 - Toolbar: &Google Toolbar - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - C:\Program Files\Google\Google Toolbar\GoogleToolbar.dll
O4 - HKLM\..\Run: [StartCCC] "C:\Program Files\ATI Technologies\ATI.ACE\Core-Static\CLIStart.exe"
O4 - HKLM\..\Run: [RtHDVCpl] RtHDVCpl.exe
O4 - HKLM\..\Run: [Camera Assistant Software] "C:\Program Files\Camera Assistant Software for Toshiba\traybar.exe" /start
O4 - HKLM\..\Run: [TPwrMain] %ProgramFiles%\TOSHIBA\Power Saver\TPwrMain.EXE
O4 - HKLM\..\Run: [HSON] %ProgramFiles%\TOSHIBA\TBS\HSON.exe
O4 - HKLM\..\Run: [SmoothView] %ProgramFiles%\Toshiba\SmoothView\SmoothView.exe
O4 - HKLM\..\Run: [00TCrdMain] %ProgramFiles%\TOSHIBA\FlashCards\TCrdMain.exe
O4 - HKLM\..\Run: [Windows Defender] %ProgramFiles%\Windows Defender\MSASCui.exe -hide
O4 - HKLM\..\Run: [ITSecMng] %ProgramFiles%\TOSHIBA\Bluetooth Toshiba Stack\ItSecMng.exe /START
O4 - HKLM\..\Run: [SynTPEnh] C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
O4 - HKLM\..\Run: [Google Desktop Search] "C:\Program Files\Google\Google Desktop Search\GoogleDesktop.exe" /startup
O4 - HKLM\..\Run: [PCMAgent] "C:\Program Files\CyberLink\PowerCinema for TOSHIBA\PCMAgent.exe"
O4 - HKLM\..\Run: [CLMLServer] "C:\Program Files\CyberLink\PowerCinema for TOSHIBA\Kernel\CLML\CLMLSvc.exe"
O4 - HKLM\..\Run: [SpywareTerminator] "C:\Program Files\Spyware Terminator\SpywareTerminatorShield.exe"
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Program Files\Adobe\Reader 8.0\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [{0228e555-4f9c-4e35-a3ec-b109a192b4c2}] C:\Program Files\Google\Gmail Notifier\gnotify.exe
O4 - HKLM\..\Run: [AppleSyncNotifier] C:\Program Files\Common Files\Apple\Mobile Device Support\bin\AppleSyncNotifier.exe
O4 - HKLM\..\Run: [Presto! PVR Monitor] C:\Program Files\NewSoft\Presto! PVR\Monitor.exe
O4 - HKLM\..\Run: [ChangeFilterMerit] C:\Program Files\NewSoft\Presto! PVR\ChangeFilterMerit.exe
O4 - HKLM\..\Run: [boincmgr] "C:\Program Files\BOINC\boincmgr.exe" /a /s
O4 - HKLM\..\Run: [boinctray] "C:\Program Files\BOINC\boinctray.exe"
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Common Files\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\QTTask.exe" -atboottime
O4 - HKLM\..\Run: [iTunesHelper] "C:\Program Files\iTunes\iTunesHelper.exe"
O4 - HKLM\..\Run: [Skytel] Skytel.exe
O4 - HKLM\..\Run: [avgnt] "C:\Program Files\Avira\AntiVir Desktop\avgnt.exe" /min
O4 - HKCU\..\Run: [TOSCDSPD] C:\Program Files\TOSHIBA\TOSCDSPD\TOSCDSPD.exe
O4 - HKCU\..\Run: [Sidebar] C:\Program Files\windows sidebar\sidebar.exe /autoRun
O4 - HKCU\..\Run: [swg] C:\Program Files\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe
O4 - HKCU\..\Run: [ehTray.exe] C:\Windows\ehome\ehTray.exe
O4 - HKCU\..\Run: [DAEMON Tools Lite] "C:\Program Files\DAEMON Tools Lite\daemon.exe" -autorun
O4 - HKCU\..\Run: [VoipRaider] "C:\Program Files\VoipRaider.com\VoipRaider\voipraider.exe" -nosplash -minimized
O4 - HKCU\..\RunOnce: [FlashPlayerUpdate] C:\Windows\system32\Macromed\Flash\NPSWF32_FlashUtil.exe -p
O4 - HKUS\S-1-5-19\..\Run: [Sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /detectMem (User 'LOCAL SERVICE')
O4 - HKUS\S-1-5-19\..\Run: [WindowsWelcomeCenter] rundll32.exe oobefldr.dll,ShowWelcomeCenter (User 'LOCAL SERVICE')
O4 - HKUS\S-1-5-20\..\Run: [Sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /detectMem (User 'NETWORK SERVICE')
O4 - Startup: MagicDisc.lnk = C:\Program Files\MagicDisc\MagicDisc.exe
O4 - Global Startup: VPN Client.lnk = ?
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~3\Office12\EXCEL.EXE/3000
O8 - Extra context menu item: E&xportar para o Microsoft Excel - res://C:\PROGRA~1\MICROS~3\Office12\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_03\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_03\bin\ssv.dll
O9 - Extra button: Bonjour - {7F9DB11C-E358-4ca6-A83D-ACC663939424} - C:\Program Files\Bonjour\ExplorerPlugin.dll
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~3\Office12\REFIEBAR.DLL
O13 - Gopher Prefix:
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://fpdownload2.macromedia.com/get/shockwave/cabs/flash/swflash.cab
O16 - DPF: {DB6BF2CD-4F59-4F1C-AA9C-D08C0B61A931} (GbpDistObj Class) - https://www14.bancobrasil.com.br/plugin/GbpDist.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{201A76C6-6252-4080-955B-F685A8421CFD}: NameServer = 129.69.1.28,129.143.2.1
O17 - HKLM\System\CCS\Services\Tcpip\..\{73E15D1B-3AF0-49D2-99FE-2460C6088320}: NameServer = 129.69.1.28,141.58.231.9
O17 - HKLM\System\CS1\Services\Tcpip\..\{201A76C6-6252-4080-955B-F685A8421CFD}: NameServer = 129.69.1.28,129.143.2.1
O17 - HKLM\System\CS2\Services\Tcpip\..\{201A76C6-6252-4080-955B-F685A8421CFD}: NameServer = 129.69.1.28,129.143.2.1
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\PROGRA~1\COMMON~1\Skype\SKYPE4~1.DLL
O20 - AppInit_DLLs: C:\PROGRA~1\Google\GOOGLE~1\GOEC62~1.DLL
O20 - Winlogon Notify: GbPluginBb - C:\PROGRAM FILES\GBPLUGIN\gbieh.dll
O21 - SSODL: CompIBBrd - {A3717295-941D-416F-9384-ED1736729F1C} - C:\Program Files\Scpad\scpLIB.dll
O22 - SharedTaskScheduler: scpLIB - {A3717295-941D-416F-9384-ED1736729F1C} - C:\Program Files\Scpad\scpLIB.dll
O23 - Service: Agere Modem Call Progress Audio (AgereModemAudio) - Agere Systems - C:\Windows\system32\agrsmsvc.exe
O23 - Service: Avira AntiVir Scheduler (AntiVirSchedulerService) - Avira GmbH - C:\Program Files\Avira\AntiVir Desktop\sched.exe
O23 - Service: Avira AntiVir Guard (AntiVirService) - Avira GmbH - C:\Program Files\Avira\AntiVir Desktop\avguard.exe
O23 - Service: Dispositivo Celular da Apple (Apple Mobile Device) - Apple Inc. - C:\Program Files\Common Files\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
O23 - Service: Ati External Event Utility - ATI Technologies Inc. - C:\Windows\system32\Ati2evxx.exe
O23 - Service: Bonjour Service - Apple Inc. - C:\Program Files\Bonjour\mDNSResponder.exe
O23 - Service: Symantec Lic NetConnect service (CLTNetCnService) - Unknown owner - C:\Program Files\Common Files\Symantec Shared\ccSvcHst.exe (file missing)
O23 - Service: ConfigFree Service - TOSHIBA CORPORATION - C:\Program Files\TOSHIBA\ConfigFree\CFSvcs.exe
O23 - Service: Cisco Systems, Inc. VPN Service (CVPND) - Cisco Systems, Inc. - C:\Program Files\Cisco Systems\VPN Client\cvpnd.exe
O23 - Service: Intel(R) PROSet/Wireless Event Log (EvtEng) - Intel Corporation - C:\Program Files\Intel\Wireless\Bin\EvtEng.exe
O23 - Service: Gbp Service (GbpSv) - - C:\PROGRA~1\GbPlugin\GbpSv.exe
O23 - Service: GoogleDesktopManager - Google - C:\Program Files\Google\Google Desktop Search\GoogleDesktop.exe
O23 - Service: Google Software Updater (gusvc) - Google - C:\Program Files\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Common Files\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: OpenVPN Service (OpenVPNService) - Unknown owner - C:\Program Files\OpenVPN\bin\openvpnserv.exe
O23 - Service: pinger - Unknown owner - C:\Toshiba\IVP\ISM\pinger.exe
O23 - Service: Intel(R) PROSet/Wireless Registry Service (RegSrvc) - Intel Corporation - C:\Program Files\Intel\Wireless\Bin\RegSrvc.exe
O23 - Service: Spyware Terminator Realtime Shield Service (sp_rssrv) - Crawler.com - C:\Program Files\Spyware Terminator\sp_rsser.exe
O23 - Service: Swupdtmr - Unknown owner - c:\Toshiba\IVP\swupdate\swupdtmr.exe
O23 - Service: TOSHIBA Navi Support Service (TNaviSrv) - TOSHIBA Corporation - C:\Program Files\Toshiba\TOSHIBA DVD PLAYER\TNaviSrv.exe
O23 - Service: TOSHIBA Optical Disc Drive Service (TODDSrv) - TOSHIBA Corporation - C:\Windows\system32\TODDSrv.exe
O23 - Service: TOSHIBA Power Saver (TosCoSrv) - TOSHIBA Corporation - C:\Program Files\Toshiba\Power Saver\TosCoSrv.exe
O23 - Service: TOSHIBA Bluetooth Service - TOSHIBA CORPORATION - C:\Program Files\Toshiba\Bluetooth Toshiba Stack\TosBtSrv.exe
O23 - Service: TOSHIBA SMART Log Service - TOSHIBA Corporation - C:\Program Files\TOSHIBA\SMARTLogService\TosIPCSrv.exe
O23 - Service: Ulead Burning Helper (UleadBurningHelper) - Ulead Systems, Inc. - C:\Program Files\Common Files\Ulead Systems\DVD\ULCDRSvr.exe

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