Browser funktionieren nicht

Hallo,

hab folgendes Problem:

IE und Mozilla funktionieren nach ein paar Minuten nicht. Die Seiten werden nicht angezeigt. MSN funktioniert ganz normal und Internetverbidnung besteht auch. Woran kann das liegen?

hier noch einige Infos:

Logfile of HijackThis v1.99.1
Scan saved at 18:52:49, on 21.04.2008
Platform: Windows 2000 SP4 (WinNT 5.00.2195)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

Running processes:
C:\WINNT\System32\smss.exe
C:\WINNT\system32\winlogon.exe
C:\WINNT\system32\services.exe
C:\WINNT\system32\lsass.exe
C:\WINNT\system32\svchost.exe
C:\WINNT\system32\spoolsv.exe
C:\Programme\Alwil Software\Avast4\aswUpdSv.exe
C:\Programme\Alwil Software\Avast4\ashServ.exe
C:\WINNT\system32\drivers\CDAC11BA.EXE
C:\WINNT\System32\svchost.exe
C:\Programme\Gemeinsame Dateien\Microsoft Shared\VS7DEBUG\MDM.EXE
C:\WINNT\system32\regsvc.exe
C:\WINNT\system32\MSTask.exe
C:\WINNT\System32\WBEM\WinMgmt.exe
C:\WINNT\system32\svchost.exe
C:\WINNT\Explorer.EXE
C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
C:\Programme\KMaestro\KMaestro.exe
C:\Programme\Alwil Software\Avast4\ashWebSv.exe
C:\Programme\Java\j2re1.4.2_08\bin\jusched.exe
C:\Programme\Alwil Software\Avast4\ashMaiSv.exe
C:\Programme\Adobe\Acrobat 7.0\Distillr\Acrotray.exe
C:\Programme\Ashampoo\Ashampoo FireWall\FireWall.exe
C:\Programme\Adobe\Acrobat 7.0\Acrobat\acrobat_sl.exe
C:\Programme\Adobe\Acrobat 7.0\Reader\reader_sl.exe
C:\Programme\Internet Explorer\IEXPLORE.EXE
C:\Programme\ArcorOnline\AOButler.exe
C:\Dokumente und Einstellungen\Redzic\Desktop\HijackThis.exe

R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.arcor.de
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Window Title = Arcor AG & Co. KG
O2 - BHO: AcroIEToolbarHelper Class - {AE7CD045-E861-484f-8273-0445EE161910} - C:\Programme\Adobe\Acrobat 7.0\Acrobat\AcroIEFavClient.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINNT\System32\msdxm.ocx
O3 - Toolbar: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Programme\Yahoo!\Companion\Installs\cpn\yt.dll
O3 - Toolbar: Adobe PDF - {47833539-D0C5-4125-9FA8-0819E2EAAC93} - C:\Programme\Adobe\Acrobat 7.0\Acrobat\AcroIEFavClient.dll
O4 - HKLM\..\Run: [Synchronization Manager] mobsync.exe /logon
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINNT\System32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [BtcMaestro] C:\Programme\KMaestro\KMaestro.exe
O4 - HKLM\..\Run: [TkBellExe] "C:\Programme\Gemeinsame Dateien\Real\Update_OB\realsched.exe"  -osboot
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Programme\Java\j2re1.4.2_08\bin\jusched.exe
O4 - HKLM\..\Run: [Acrobat Assistant 7.0] "C:\Programme\Adobe\Acrobat 7.0\Distillr\Acrotray.exe"
O4 - HKLM\..\Run: [Ashampoo FireWall] "C:\Programme\Ashampoo\Ashampoo FireWall\FireWall.exe" -TRAY
O4 - Global Startup: Adobe Acrobat - Schnellstart.lnk = C:\Programme\Adobe\Acrobat 7.0\Acrobat\acrobat_sl.exe
O4 - Global Startup: Adobe Reader - Schnellstart.lnk = C:\Programme\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O8 - Extra context menu item: Ausgewählte Verknüpfungen in Adobe PDF konvertieren - res://C:\Programme\Adobe\Acrobat 7.0\Acrobat\AcroIEFavClient.dll/AcroIECaptureSelLinks.html
O8 - Extra context menu item: Ausgewählte Verknüpfungen in vorhandene PDF-Datei konvertieren - res://C:\Programme\Adobe\Acrobat 7.0\Acrobat\AcroIEFavClient.dll/AcroIEAppendSelLinks.html
O8 - Extra context menu item: Auswahl in Adobe PDF konvertieren - res://C:\Programme\Adobe\Acrobat 7.0\Acrobat\AcroIEFavClient.dll/AcroIECapture.html
O8 - Extra context menu item: Auswahl in vorhandene PDF-Datei konvertieren - res://C:\Programme\Adobe\Acrobat 7.0\Acrobat\AcroIEFavClient.dll/AcroIEAppend.html
O8 - Extra context menu item: In Adobe PDF konvertieren - res://C:\Programme\Adobe\Acrobat 7.0\Acrobat\AcroIEFavClient.dll/AcroIECapture.html
O8 - Extra context menu item: In vorhandene PDF-Datei konvertieren - res://C:\Programme\Adobe\Acrobat 7.0\Acrobat\AcroIEFavClient.dll/AcroIEAppend.html
O8 - Extra context menu item: Verknüpfungsziel in Adobe PDF konvertieren - res://C:\Programme\Adobe\Acrobat 7.0\Acrobat\AcroIEFavClient.dll/AcroIECapture.html
O8 - Extra context menu item: Verknüpfungsziel in vorhandene PDF-Datei konvertieren - res://C:\Programme\Adobe\Acrobat 7.0\Acrobat\AcroIEFavClient.dll/AcroIEAppend.html
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Programme\Java\j2re1.4.2_08\bin\npjpi142_08.dll
O9 - Extra 'Tools' menuitem: Sun Java Konsole - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Programme\Java\j2re1.4.2_08\bin\npjpi142_08.dll
O9 - Extra button: Create Mobile Favorite - {2EAF5BB1-070F-11D3-9307-00C04FAE2D4F} - C:\PROGRA~1\MI3AA1~1\INetRepl.dll
O9 - Extra button: (no name) - {2EAF5BB2-070F-11D3-9307-00C04FAE2D4F} - C:\PROGRA~1\MI3AA1~1\INetRepl.dll
O9 - Extra 'Tools' menuitem: Mobilen Favoriten erstellen... - {2EAF5BB2-070F-11D3-9307-00C04FAE2D4F} - C:\PROGRA~1\MI3AA1~1\INetRepl.dll
O9 - Extra button: (no name) - {85d1f590-48f4-11d9-9669-0800200c9a66} - %windir%\bdoscandel.exe (file missing)
O9 - Extra 'Tools' menuitem: Uninstall BitDefender Online Scanner v8 - {85d1f590-48f4-11d9-9669-0800200c9a66} - %windir%\bdoscandel.exe (file missing)
O9 - Extra button: Recherchieren - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
O9 - Extra button: Real.com - {CD67F990-D8E9-11d2-98FE-00C0F0318AFE} - C:\WINNT\system32\Shdocvw.dll
O10 - Unknown file in Winsock LSP: c:\programme\ashampoo\ashampoo firewall\spi.dll
O10 - Unknown file in Winsock LSP: c:\programme\ashampoo\ashampoo firewall\spi.dll
O10 - Unknown file in Winsock LSP: c:\programme\ashampoo\ashampoo firewall\spi.dll
O10 - Unknown file in Winsock LSP: c:\programme\ashampoo\ashampoo firewall\spi.dll
O10 - Unknown file in Winsock LSP: c:\programme\ashampoo\ashampoo firewall\spi.dll
O10 - Unknown file in Winsock LSP: c:\programme\ashampoo\ashampoo firewall\spi.dll
O16 - DPF: {4A3CF76B-EC7A-405D-A67D-8DC6B52AB35B} - http://aolcc.aol.de/computercheckup/qdiagcc.cab
O16 - DPF: {4F1E5B1A-2A80-42CA-8532-2D05CB959537} (MSN Photo Upload Tool) - http://gfx1.hotmail.com/mail/w2/resources/MSNPUpld.cab
O16 - DPF: {56336BCB-3D8A-11D6-A00B-0050DA18DE71} (RdxIE Class) - http://software-dl.real.com/26a18411cc97f99e6423/netzip/RdxIE601_de.cab
O16 - DPF: {5D86DDB5-BDF9-441B-9E9E-D4730F4EE499} (BDSCANONLINE Control) - http://www.bitdefender.de/scan8/oscan8.cab
O16 - DPF: {6E5E167B-1566-4316-B27F-0DDAB3484CF7} (Image Uploader Control) - http://www.studivz.net/photouploader/ImageUploader4.cab
O16 - DPF: {9122D757-5A4F-4768-82C5-B4171D8556A7} (PhotoPickConvert Class) - http://appdirectory.messenger.msn.com/AppDirectory/P4Apps/PhotoSwap/PhtPkMSN.cab
O16 - DPF: {B38870E4-7ECB-40DA-8C6A-595F0A5519FF} (MsnMessengerSetupDownloadControl Class) - http://messenger.msn.com/download/msnmessengersetupdownloader.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: {E6187999-9FEC-46A1-A20F-F4CA977D5643} (ZoneChess Object) - http://messenger.zone.msn.com/binary/Chess.cab57176.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{F3AB5880-81E1-49AC-9577-482C0FB25A2D}: NameServer = 195.50.140.178 195.50.140.114
O20 - Winlogon Notify: ActiveSync - C:\WINNT\SYSTEM32\WcesWlgn.dll
O20 - Winlogon Notify: nwprovau - C:\WINNT\SYSTEM32\nwprovau.dll
O23 - Service: Adobe LM Service - Adobe Systems - C:\Programme\Gemeinsame Dateien\Adobe Systems Shared\Service\Adobelmsvc.exe
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - ALWIL Software - C:\Programme\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: avast! Antivirus - ALWIL Software - C:\Programme\Alwil Software\Avast4\ashServ.exe
O23 - Service: avast! Mail Scanner - Unknown owner - C:\Programme\Alwil Software\Avast4\ashMaiSv.exe" /service (file missing)
O23 - Service: avast! Web Scanner - Unknown owner - C:\Programme\Alwil Software\Avast4\ashWebSv.exe" /service (file missing)
O23 - Service: C-DillaCdaC11BA - Macrovision - C:\WINNT\system32\drivers\CDAC11BA.EXE
O23 - Service: Verwaltungsdienst für die Verwaltung logischer Datenträger (dmadmin) - VERITAS Software Corp. - C:\WINNT\System32\dmadmin.exe
O23 - Service: NVIDIA Driver Helper Service (NVSvc) - NVIDIA Corporation - C:\WINNT\System32\nvsvc32.exe