Gracias por tu respuesta pero aun persiste el dichoso mensaje del panda de intento de secuestro de internet explorer, este es mi ultimo log.

Logfile of HijackThis v1.99.1
Scan saved at 9:50:06 PM, on 1/29/2008
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

Running processes:
C:\WINDOWS\System32\smss.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:\Program Files\Panda Security\Panda Internet Security 2008\TPSrv.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Microsoft Office\Office12\GrooveMonitor.exe
C:\WINDOWS\RTHDCPL.EXE
C:\Program Files\Panda Security\Panda Internet Security 2008\APVXDWIN.EXE
C:\Program Files\Creative\SB Live! 24-bit\Surround Mixer\CTSysVol.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\Common Files\Ahead\Lib\NMBgMonitor.exe
C:\Program Files\SUPERAntiSpyware\SUPERAntiSpyware.exe
C:\Program Files\Windows Live\Messenger\MsnMsgr.Exe
C:\Program Files\Messenger\msmsgs.exe
C:\Program Files\Ares\Ares.exe
C:\Program Files\ATI Technologies\ATI.ACE\Core-Static\MOM.EXE
C:\WINDOWS\system32\CTsvcCDA.exe
C:\Program Files\ewido anti-spyware 4.0\guard.exe
C:\Program Files\Common Files\Microsoft Shared\VS7DEBUG\mdm.exe
C:\WINDOWS\system32\oodag.exe
C:\Program Files\Panda Security\Panda Internet Security 2008\PsCtrls.exe
C:\Program Files\Panda Security\Panda Internet Security 2008\PavFnSvr.exe
C:\Program Files\Common Files\Panda Software\PavShld\pavprsrv.exe
C:\Program Files\Panda Security\Panda Internet Security 2008\pavsrv51.exe
C:\Program Files\Raxco\PerfectDisk\PDAgent.exe
C:\Program Files\Panda Security\Panda Internet Security 2008\AVENGINE.EXE
C:\Program Files\Panda Security\Panda Internet Security 2008\AntiSpam\pskmssvc.exe
c:\program files\panda security\panda internet security 2008\firewall\PSHOST.EXE
C:\Program Files\Panda Security\Panda Internet Security 2008\PsImSvc.exe
C:\Program Files\CyberLink\Shared files\RichVideo.exe
C:\WINDOWS\system32\MsPMSPSv.exe
C:\Program Files\Common Files\Softwin\BitDefender Communicator\xcommsvr.exe
C:\Program Files\Common Files\Softwin\BitDefender Update Service\livesrv.exe
C:\Program Files\Raxco\PerfectDisk\PDEngine.exe
C:\Program Files\Panda Security\Panda Internet Security 2008\SRVLOAD.EXE
C:\Program Files\ATI Technologies\ATI.ACE\Core-Static\ccc.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Panda Security\Panda Internet Security 2008\WebProxy.exe
C:\Program Files\Windows Live\Messenger\usnsvc.exe
C:\Program Files\Panda Security\Panda Internet Security 2008\PavBckPT.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Common Files\Softwin\BitDefender Scan Server\bdss.exe
C:\Program Files\Softwin\BitDefender10\vsserv.exe
C:\Program Files\CCleaner\ccleaner.exe
C:\Program Files\(HijackThis)\HijackThis.exe

O2 - BHO: Yahoo! Toolbar Helper - {02478D38-C3F9-4EFB-9B51-7695ECA05670} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O2 - BHO: Adobe PDF Reader Link Helper - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelper.dll
O2 - BHO: Idea2 SidebarBrowserMonitor Class - {45AD732C-2CE2-4666-B366-B2214AD57A49} - C:\Program Files\Desktop Sidebar\sbhelp.dll
O2 - BHO: Megaupload Toolbar - {4E7BD74F-2B8D-469E-CCB0-B130EEDBE97C} - C:\PROGRA~1\MEGAUP~1\MEGAUP~1.DLL
O2 - BHO: Groove GFS Browser Helper - {72853161-30C5-4D22-B7F9-0BBC1D38A37E} - C:\PROGRA~1\MICROS~1\Office12\GRA8E1~1.DLL
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - c:\program files\google\googletoolbar2.dll
O2 - BHO: Google Toolbar Notifier BHO - {AF69DE43-7D58-4638-B6FA-CE66B5AD205D} - C:\Program Files\Google\GoogleToolbarNotifier\2.0.301.5672\sw g.dll
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\program files\google\googletoolbar2.dll
O3 - Toolbar: Megaupload Toolbar - {4E7BD74F-2B8D-469E-CCB0-B130EEDBE97C} - C:\PROGRA~1\MEGAUP~1\MEGAUP~1.DLL
O3 - Toolbar: &Save Flash - {4064EA35-578D-4073-A834-C96D82CBCF40} - C:\Program Files\Save Flash\SaveFlash.dll
O4 - HKLM\..\Run: [GrooveMonitor] "C:\Program Files\Microsoft Office\Office12\GrooveMonitor.exe"
O4 - HKLM\..\Run: [RTHDCPL] RTHDCPL.EXE
O4 - HKLM\..\Run: [Alcmtr] ALCMTR.EXE
O4 - HKLM\..\Run: [JMB36X IDE Setup] C:\WINDOWS\RaidTool\xInsIDE.exe
O4 - HKLM\..\Run: [36X Raid Configurer] C:\WINDOWS\system32\xRaidSetup.exe boot
O4 - HKLM\..\Run: [APVXDWIN] "C:\Program Files\Panda Security\Panda Internet Security 2008\APVXDWIN.EXE" /s
O4 - HKLM\..\Run: [SCANINICIO] "C:\Program Files\Panda Security\Panda Internet Security 2008\Inicio.exe"
O4 - HKLM\..\Run: [CTSysVol] C:\Program Files\Creative\SB Live! 24-bit\Surround Mixer\CTSysVol.exe /r
O4 - HKLM\..\Run: [UpdReg] C:\WINDOWS\UpdReg.EXE
O4 - HKLM\..\Run: [StartCCC] "C:\Program Files\ATI Technologies\ATI.ACE\Core-Static\CLIStart.exe"
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [BgMonitor_{79662E04-7C6C-4d9f-84C7-88D8A56B10AA}] "C:\Program Files\Common Files\Ahead\Lib\NMBgMonitor.exe"
O4 - HKCU\..\Run: [SUPERAntiSpyware] C:\Program Files\SUPERAntiSpyware\SUPERAntiSpyware.exe
O4 - HKCU\..\Run: [MsnMsgr] "C:\Program Files\Windows Live\Messenger\MsnMsgr.Exe" /background
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [ares] "C:\Program Files\Ares\Ares.exe" -h
O4 - Startup: Adobe Gamma.lnk = C:\Program Files\Common Files\Adobe\Calibration\Adobe Gamma Loader.exe
O4 - Global Startup: Adobe Reader Speed Launch.lnk = C:\Program Files\Adobe\Reader 8.0\Reader\reader_sl.exe
O4 - Global Startup: Adobe Reader Synchronizer.lnk = C:\Program Files\Adobe\Reader 8.0\Reader\AdobeCollabSync.exe
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~1\Office12\EXCEL.EXE/3000
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~1\Office12\REFIEBAR.DLL
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O16 - DPF: {0EB0E74A-2A76-4AB3-A7FB-9BD8C29F7F75} (CKAVWebScan Object) - http://www.kaspersky.com/kos/spanish/kavwebscan_unicode.cab
O16 - DPF: {193C772A-87BE-4B19-A7BB-445B226FE9A1} (ewidoOnlineScan Control) - http://downloads.ewido.net/ewidoOnlineScan.cab
O16 - DPF: {30528230-99f7-4bb4-88d8-fa1d4f56a2ab} (YInstStarter Class) - C:\Program Files\Yahoo!\Common\yinsthelper.dll
O16 - DPF: {512FC5A1-7DE1-43F1-BC0C-371622FCB409} (TotalScan Installer Class) - http://www.nanoscan.com/as/cabs/ascstubie.cab
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://www.update.microsoft.com/microsoftupdate/v6/V5Controls/en/x86/client/wuweb_site.cab?1201261844781
O16 - DPF: {6E32070A-766D-4EE6-879C-DC1FA91D2FC3} (MUWebControl Class) - http://www.update.microsoft.com/microsoftupdate/v6/V5Controls/en/x86/client/muweb_site.cab?1201261822812
O16 - DPF: {9A9307A0-7DA4-4DAF-B042-5009F29E09E1} (ActiveScan Installer Class) - http://acs.pandasoftware.com/activescan/as5free/asinst.cab
O18 - Protocol: grooveLocalGWS - {88FED34C-F0CA-4636-A375-3CB6248B04CD} - C:\PROGRA~1\MICROS~1\Office12\GR99D3~1.DLL
O18 - Protocol: livecall - {828030A1-22C1-4009-854F-8E305202313F} - C:\PROGRA~1\WINDOW~4\MESSEN~1\MSGRAP~1.DLL
O18 - Protocol: ms-help - {314111C7-A502-11D2-BBCA-00C04F8EC294} - C:\Program Files\Common Files\Microsoft Shared\Help\hxds.dll
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - C:\PROGRA~1\WINDOW~4\MESSEN~1\MSGRAP~1.DLL
O18 - Filter hijack: text/xml - {807563E5-5146-11D5-A672-00B0D022E945} - C:\PROGRA~1\COMMON~1\MICROS~1\OFFICE12\MSOXMLMF.DL L
O20 - Winlogon Notify: !SASWinLogon - C:\Program Files\SUPERAntiSpyware\SASWINLO.dll
O20 - Winlogon Notify: WgaLogon - C:\WINDOWS\SYSTEM32\WgaLogon.dll
O21 - SSODL: WPDShServiceObj - {AAA288BA-9A4C-45B0-95D7-94D524869DB5} - C:\WINDOWS\system32\WPDShServiceObj.dll
O23 - Service: Adobe LM Service - Adobe Systems - C:\Program Files\Common Files\Adobe Systems Shared\Service\Adobelmsvc.exe
O23 - Service: Ares Chatroom server (AresChatServer) - Ares Development Group - C:\Program Files\Ares\chatServer.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: BitDefender Scan Server (bdss) - Unknown owner - C:\Program Files\Common Files\Softwin\BitDefender Scan Server\bdss.exe" /service (file missing)
O23 - Service: Creative Service for CDROM Access - Creative Technology Ltd - C:\WINDOWS\system32\CTsvcCDA.exe
O23 - Service: ewido anti-spyware 4.0 guard - Anti-Malware Development a.s. - C:\Program Files\ewido anti-spyware 4.0\guard.exe
O23 - Service: Google Updater Service (gusvc) - Google - C:\Program Files\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: iPod Service - Apple Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: BitDefender Desktop Update Service (LIVESRV) - Unknown owner - C:\Program Files\Common Files\Softwin\BitDefender Update Service\livesrv.exe" /service (file missing)
O23 - Service: O&O Defrag - O&O Software GmbH - C:\WINDOWS\system32\oodag.exe
O23 - Service: Panda Software Controller - Panda Software International - C:\Program Files\Panda Security\Panda Internet Security 2008\PsCtrls.exe
O23 - Service: Panda Function Service (PAVFNSVR) - Panda Software International - C:\Program Files\Panda Security\Panda Internet Security 2008\PavFnSvr.exe
O23 - Service: Panda Process Protection Service (PavPrSrv) - Panda Software - C:\Program Files\Common Files\Panda Software\PavShld\pavprsrv.exe
O23 - Service: Panda anti-virus service (PAVSRV) - Panda Software International - C:\Program Files\Panda Security\Panda Internet Security 2008\pavsrv51.exe
O23 - Service: PDAgent - Raxco Software, Inc. - C:\Program Files\Raxco\PerfectDisk\PDAgent.exe
O23 - Service: PDEngine - Raxco Software, Inc. - C:\Program Files\Raxco\PerfectDisk\PDEngine.exe
O23 - Service: Panda Antispam Engine (pmshellsrv) - Panda Software International - C:\Program Files\Panda Security\Panda Internet Security 2008\AntiSpam\pskmssvc.exe
O23 - Service: Panda Host Service (PSHost) - Panda Software International - c:\program files\panda security\panda internet security 2008\firewall\PSHOST.EXE
O23 - Service: Panda IManager Service (PSIMSVC) - Panda Software International - C:\Program Files\Panda Security\Panda Internet Security 2008\PsImSvc.exe
O23 - Service: Cyberlink RichVideo Service(CRVS) (RichVideo) - Unknown owner - C:\Program Files\CyberLink\Shared files\RichVideo.exe
O23 - Service: Sandra Data Service (SandraDataSrv) - SiSoftware - C:\Program Files\SiSoftware\SiSoftware Sandra Enterprise 2007.SP1\Win32\RpcDataSrv.exe
O23 - Service: Sandra Service (SandraTheSrv) - SiSoftware - C:\Program Files\SiSoftware\SiSoftware Sandra Enterprise 2007.SP1\RpcSandraSrv.exe
O23 - Service: Panda TPSrv (TPSrv) - Panda Software International - C:\Program Files\Panda Security\Panda Internet Security 2008\TPSrv.exe
O23 - Service: BitDefender Virus Shield (VSSERV) - Unknown owner - C:\Program Files\Softwin\BitDefender10\vsserv.exe" /service (file missing)
O23 - Service: BitDefender Communicator (XCOMM) - Unknown owner - C:\Program Files\Common Files\Softwin\BitDefender Communicator\xcommsvr.exe" /service (file missing)