Brauche Hilfe, mein IE wird immer wieder auf irgendwelche englischsprachigen Search-Sites umgeleitet. Bitte schaut euch mal mein log an:

Logfile of HijackThis v1.99.1
Scan saved at 13:32:06, on 31.12.2006
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.5730.0011)

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\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\Programme\Gemeinsame Dateien\Symantec Shared\ccEvtMgr.exe
C:\Programme\Apoint\Apoint.exe
C:\WINDOWS\system32\rundll32.exe
C:\Programme\ATI Technologies\ATI Control Panel\atiptaxx.exe
C:\WINDOWS\system32\ICO.EXE
C:\Programme\Sony\HotKey Utility\HKserv.exe
C:\WINDOWS\System32\ezSP_Px.exe
C:\Programme\Sony\Wireless Switch Setting Utility\Switcher.exe
C:\Programme\Gemeinsame Dateien\Microsoft Shared\Works Shared\WkUFind.exe
C:\Programme\Gemeinsame Dateien\Symantec Shared\ccApp.exe
C:\Programme\Java\jre1.5.0_10\bin\jusched.exe
C:\Programme\iTunes\iTunesHelper.exe
C:\Programme\QuickTime\qttask.exe
C:\Programme\Adobe\Photoshop Album Starter Edition\3.0\Apps\apdproxy.exe
C:\Programme\AntiVir PersonalEdition Classic\avgnt.exe
C:\Programme\Spamihilator\spamihilator.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Programme\PowerPanel\Program\PcfMgr.exe
C:\Programme\Sony\BlueSpace\BlueSpaceNE.exe
C:\Programme\AntiVir PersonalEdition Classic\sched.exe
C:\Programme\AntiVir PersonalEdition Classic\avguard.exe
C:\WINDOWS\System32\Ati2evxx.exe
C:\Programme\Apoint\Apntex.exe
C:\WINDOWS\system32\svchost.exe
C:\Programme\PurgeIE\PurgeIE_Service.exe
C:\Programme\Sony\HotKey Utility\HKWnd.exe
C:\Programme\Gemeinsame Dateien\Symantec Shared\Security Center\SymWSC.exe
C:\Programme\iPod\bin\iPodService.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\System32\alg.exe
C:\WINDOWS\system32\freecell.exe
C:\Programme\Internet Explorer\iexplore.exe
C:\Programme\Internet Explorer\iexplore.exe
C:\Programme\Messenger\msmsgs.exe
C:\Programme\Outlook Express\msimn.exe
C:\Programme\Microsoft Office\Office10\WINWORD.EXE
C:\Dokumente und Einstellungen\Yogi\Desktop\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.t-online.de/
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.club-vaio.sony-europe.com/
O2 - BHO: Yahoo! Toolbar Helper - {02478D38-C3F9-4EFB-9B51-7695ECA05670} - C:\Programme\Yahoo!\Companion\Installs\cpn\yt.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Programme\Java\jre1.5.0_10\bin\ssv.dll
O2 - BHO: CNavExtBho Class - {BDF3E430-B101-42AD-A544-FADC6B084872} - C:\Programme\Norton AntiVirus\NavShExt.dll
O3 - Toolbar: Norton AntiVirus - {42CDD1BF-3FFB-4238-8AD1-7859DF00B1D6} - C:\Programme\Norton AntiVirus\NavShExt.dll
O3 - Toolbar: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Programme\Yahoo!\Companion\Installs\cpn\yt.dll
O4 - HKLM\..\Run: [Apoint] C:\Programme\Apoint\Apoint.exe
O4 - HKLM\..\Run: [BluetoothAuthenticationAgent] rundll32.exe bthprops.cpl,,BluetoothAuthenticationAgent
O4 - HKLM\..\Run: [ATIModeChange] Ati2mdxx.exe
O4 - HKLM\..\Run: [ATIPTA] C:\Programme\ATI Technologies\ATI Control Panel\atiptaxx.exe
O4 - HKLM\..\Run: [Mouse Suite 98 Daemon] ICO.EXE
O4 - HKLM\..\Run: [HKSERV.EXE] C:\Programme\Sony\HotKey Utility\HKserv.exe
O4 - HKLM\..\Run: [ezShieldProtector for Px] C:\WINDOWS\System32\ezSP_Px.exe
O4 - HKLM\..\Run: [Switcher.exe] C:\Programme\Sony\Wireless Switch Setting Utility\Switcher.exe
O4 - HKLM\..\Run: [Microsoft Works Update Detection] C:\Programme\Gemeinsame Dateien\Microsoft Shared\Works Shared\WkUFind.exe
O4 - HKLM\..\Run: [ccApp] "C:\Programme\Gemeinsame Dateien\Symantec Shared\ccApp.exe"
O4 - HKLM\..\Run: [ccRegVfy] "C:\Programme\Gemeinsame Dateien\Symantec Shared\ccRegVfy.exe"
O4 - HKLM\..\Run: [Symantec NetDriver Monitor] C:\PROGRA~1\SYMNET~1\SNDMon.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Programme\Java\jre1.5.0_10\bin\jusched.exe"
O4 - HKLM\..\Run: [iTunesHelper] "C:\Programme\iTunes\iTunesHelper.exe"
O4 - HKLM\..\Run: [QuickTime Task] "C:\Programme\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [Adobe Photo Downloader] "C:\Programme\Adobe\Photoshop Album Starter Edition\3.0\Apps\apdproxy.exe"
O4 - HKLM\..\Run: [avgnt] "C:\Programme\AntiVir PersonalEdition Classic\avgnt.exe" /min
O4 - HKCU\..\Run: [Spamihilator] "C:\Programme\Spamihilator\spamihilator.exe"
O4 - HKCU\..\Run: [Yahoo! Pager] C:\PROGRA~1\Yahoo!\MESSEN~1\ypager.exe -quiet
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - Startup: BlueSpace NE.lnk = C:\Programme\Sony\BlueSpace\BlueSpaceNE.exe
O4 - Global Startup: Adobe Reader - Schnellstart.lnk = C:\Programme\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Programme\Microsoft Office\Office10\OSA.EXE
O4 - Global Startup: PowerPanel.lnk = ?
O8 - Extra context menu item: Nach Microsoft &Excel exportieren - res://C:\PROGRA~1\MICROS~2\Office10\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Programme\Java\jre1.5.0_10\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Sun Java Konsole - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Programme\Java\jre1.5.0_10\bin\ssv.dll
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - %windir%\Network Diagnostic\xpnetdiag.exe (file missing)
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - %windir%\Network Diagnostic\xpnetdiag.exe (file missing)
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Programme\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Programme\Messenger\msmsgs.exe
O11 - Options group: [INTERNATIONAL] International*
O14 - IERESET.INF: START_PAGE_URL=http://www.club-vaio.sony-europe.com/
O15 - Trusted Zone: *.sony-europe.com
O15 - Trusted Zone: *.sonystyle-europe.com
O15 - Trusted Zone: *.vaio-link.com
O16 - DPF: DigiChat Applet - http://host8.digichat.com/DigiChat/DigiClasses/Client_IE.cab
O16 - DPF: Yahoo! Chat - http://us.chat1.yimg.com/us.yimg.com/i/chat/applet/c381/chat.cab
O16 - DPF: {193C772A-87BE-4B19-A7BB-445B226FE9A1} (ewidoOnlineScan Control) - http://downloads.ewido.net/ewidoOnlineScan.cab
O16 - DPF: {215B8138-A3CF-44C5-803F-8226143CFC0A} (Trend Micro ActiveX Scan Agent 6.6) - http://housecall65.trendmicro.com/housecall/applet/html/native/x86/win32/activex/hcImpl.cab
O16 - DPF: {2B323CD9-50E3-11D3-9466-00A0C9700498} - http://us.chat1.yimg.com/us.yimg.com/i/chat/applet/v45/yacscom.cab
O16 - DPF: {4F1E5B1A-2A80-42CA-8532-2D05CB959537} (MSN Photo Upload Tool) - http://by103fd.bay103.hotmail.msn.com/resources/MsnPUpld.cab
O16 - DPF: {7D1E9C49-BD6A-11D3-87A8-009027A35D73} - http://chat.yahoo.com/cab/yacsui.cab
O16 - DPF: {9D190AE6-C81E-4039-8061-978EBAD10073} (F-Secure Online Scanner 3.0) - http://support.f-secure.com/ols/fscax.cab
O18 - Protocol: livecall - {828030A1-22C1-4009-854F-8E305202313F} - C:\PROGRA~1\MSNMES~1\MSGRAP~1.DLL
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - C:\PROGRA~1\MSNMES~1\MSGRAP~1.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: AntiVir PersonalEdition Classic Planer (AntiVirScheduler) - Avira GmbH - C:\Programme\AntiVir PersonalEdition Classic\sched.exe
O23 - Service: AntiVir PersonalEdition Classic Guard (AntiVirService) - AVIRA GmbH - C:\Programme\AntiVir PersonalEdition Classic\avguard.exe
O23 - Service: Ati HotKey Poller - Unknown owner - C:\WINDOWS\System32\Ati2evxx.exe
O23 - Service: Symantec Event Manager (ccEvtMgr) - Symantec Corporation - C:\Programme\Gemeinsame Dateien\Symantec Shared\ccEvtMgr.exe
O23 - Service: Symantec Password Validation Service (ccPwdSvc) - Symantec Corporation - C:\Programme\Gemeinsame Dateien\Symantec Shared\ccPwdSvc.exe
O23 - Service: iPod Service (iPodService) - Apple Computer, Inc. - C:\Programme\iPod\bin\iPodService.exe
O23 - Service: Norton AntiVirus Auto-Protect-Dienst (navapsvc) - Symantec Corporation - C:\Programme\Norton AntiVirus\navapsvc.exe
O23 - Service: PurgeIE XP Service (PurgeIEservice) - Assistance & Resources for Computing, Inc. - C:\Programme\PurgeIE\PurgeIE_Service.exe
O23 - Service: ScriptBlocking Service (SBService) - Symantec Corporation - C:\PROGRA~1\GEMEIN~1\SYMANT~1\SCRIPT~1\SBServ.exe
O23 - Service: Symantec Network Drivers Service (SNDSrvc) - Symantec Corporation - C:\Programme\Gemeinsame Dateien\Symantec Shared\SNDSrvc.exe
O23 - Service: Sony SPTI Service (SPTISRV) - Sony Corporation - C:\PROGRA~1\GEMEIN~1\SONYSH~1\AVLib\Sptisrv.exe
O23 - Service: SymWMI Service (SymWSC) - Symantec Corporation - C:\Programme\Gemeinsame Dateien\Symantec Shared\Security Center\SymWSC.exe

Du solltest einen weniger unsicheren Browser verwenden, als IE-Alternative würden stets aktuelle Opera- oder Firefoxbrowser in Frage kommen.
In deinem Logfile seh ich nichts, was für die Werbeeinblendung verantwortlich sein könnte, vllt. hab ich da was übersehen...

Mach mal nen Check mit eScan, folge dem Link in meiner Signatur.