I have a similar problem to others with a virus alert on my taskbar (now dissappeared) which has lead to unwanted pop ups for security and adult friend finders - I have been away and assume a colleague has used my computer to downlaod codecs?
My Start Page on IE6 is always http://www.securityuptodate.com/ and I cant change it.
HiJack log is below ....
Logfile of HijackThis v1.99.1
Scan saved at 12:50:52, on 15/06/2006
Platform: Windows XP SP1 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)
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\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\System32\brsvc01a.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\System32\brss01a.exe
C:\WINDOWS\System32\CTsvcCDA.EXE
C:\Program Files\NavNT\defwatch.exe
C:\Program Files\NavNT\rtvscan.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\System32\BRMFRSMG.EXE
C:\WINDOWS\System32\MsgSys.EXE
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\System32\dcomcfg.exe
C:\WINDOWS\System32\atmclk.exe
C:\WINDOWS\System32\hkcmd.exe
C:\Program Files\Roxio\Easy CD Creator 5\DirectCD\DirectCD.exe
C:\Program Files\QuickTime\qttask.exe
C:\Program Files\NavNT\vptray.exe
C:\Program Files\Logitech\Video\LogiTray.exe
C:\Program Files\Microsoft AntiSpyware\gcasServ.exe
C:\Program Files\Scansoft\PaperPort\pptd40nt.exe
C:\Program Files\Java\jre1.5.0_06\bin\jusched.exe
C:\Program Files\TrojanHunter 4.5\THGuard.exe
C:\Program Files\Creative\MediaSource\Detector\CTDetect.exe
C:\Program Files\MSN Messenger\msnmsgr.exe
C:\Program Files\WinZip\WZQKPICK.EXE
C:\WINDOWS\System32\LVComS.exe
C:\Program Files\Microsoft AntiSpyware\gcasDtServ.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Documents and Settings\richmac\Desktop\HijackThis.exe
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.euro.dell.com/countries/uk/enu/gen/default.htm
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.co.uk
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Window Title = Tiscali 10.0
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 5.0\Reader\ActiveX\AcroIEHelper.ocx
O2 - BHO: Nothing - {686a161d-5bd1-4999-8832-6393f41e564c} - C:\WINDOWS\System32\hp100.tmp
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.5.0_06\bin\ssv.dll
O2 - BHO: (no name) - {77701e16-9bfe-4b63-a5b4-7bd156758a37} - (no file)
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - c:\program files\google\googletoolbar2.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\system32\msdxm.ocx
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\program files\google\googletoolbar2.dll
O4 - HKLM\..\Run: [IgfxTray] C:\WINDOWS\System32\igfxtray.exe
O4 - HKLM\..\Run: [HotKeysCmds] C:\WINDOWS\System32\hkcmd.exe
O4 - HKLM\..\Run: [AdaptecDirectCD] C:\Program Files\Roxio\Easy CD Creator 5\DirectCD\DirectCD.exe
O4 - HKLM\..\Run: [DXM6Patch_981116] C:\WINDOWS\p_981116.exe /Q:A
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [WinampAgent] "C:\Program Files\Winamp3\winampa.exe"
O4 - HKLM\..\Run: [vptray] C:\Program Files\NavNT\vptray.exe
O4 - HKLM\..\Run: [LogitechVideoRepair] C:\Program Files\Logitech\Video\ISStart.exe
O4 - HKLM\..\Run: [LogitechVideoTray] C:\Program Files\Logitech\Video\LogiTray.exe
O4 - HKLM\..\Run: [gcasServ] "C:\Program Files\Microsoft AntiSpyware\gcasServ.exe"
O4 - HKLM\..\Run: [com.codeode.cactusspamfilter] "C:\Program Files\Cactus Spam Filter\cactusspamfilter.exe" -minimized
O4 - HKLM\..\Run: [msnsyslog] C:\WINDOWS\msnappm.exe
O4 - HKLM\..\Run: [FineReader7NewsReaderPro] "C:\Program Files\ABBYY FineReader 7.0 Professional Edition\ABBYYNewsReader.exe"
O4 - HKLM\..\Run: [PaperPort PTD] C:\Program Files\Scansoft\PaperPort\pptd40nt.exe
O4 - HKLM\..\Run: [IndexSearch] C:\Program Files\Scansoft\PaperPort\IndexSearch.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Program Files\Java\jre1.5.0_06\bin\jusched.exe
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [THGuard] "C:\Program Files\TrojanHunter 4.5\THGuard.exe"
O4 - HKCU\..\Run: [SSK Service] C:\WINDOWS\winssk32.exe
O4 - HKCU\..\Run: [TrayX] C:\WINDOWS\winppr32.exe /sinc
O4 - HKCU\..\Run: [PhotoShow Deluxe Media Manager] C:\PROGRA~1\Nero\data\Xtras\mssysmgr.exe
O4 - HKCU\..\Run: [Creative Detector] C:\Program Files\Creative\MediaSource\Detector\CTDetect.exe /R
O4 - HKCU\..\Run: [msnmsgr] "C:\Program Files\MSN Messenger\msnmsgr.exe" /background
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office\OSA9.EXE
O4 - Global Startup: WinZip Quick Pick.lnk = C:\Program Files\WinZip\WZQKPICK.EXE
O8 - Extra context menu item: &Google Search - res://c:\program files\google\GoogleToolbar2.dll/cmsearch.html
O8 - Extra context menu item: &Search - http://edits.mywebsearch.com/toolbaredits/menusearch.jhtml?p=ZNxmk571YYGB
O8 - Extra context menu item: &Translate English Word - res://c:\program files\google\GoogleToolbar2.dll/cmwordtrans.html
O8 - Extra context menu item: Backward Links - res://c:\program files\google\GoogleToolbar2.dll/cmbacklinks.html
O8 - Extra context menu item: Cached Snapshot of Page - res://c:\program files\google\GoogleToolbar2.dll/cmcache.html
O8 - Extra context menu item: Similar Pages - res://c:\program files\google\GoogleToolbar2.dll/cmsimilar.html
O8 - Extra context menu item: Translate Page into English - res://c:\program files\google\GoogleToolbar2.dll/cmtrans.html
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_06\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_06\bin\ssv.dll
O9 - Extra button: (no name) - {CD67F990-D8E9-11d2-98FE-00C0F0318AFE} - (no file)
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\MSMSGS.EXE
O9 - Extra 'Tools' menuitem: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\MSMSGS.EXE
O16 - DPF: {00B71CFB-6864-4346-A978-C0A14556272C} (Checkers Class) - http://messenger.zone.msn.com/binary/msgrchkr.cab31267.cab
O16 - DPF: {0EB73E39-8AD4-43E8-8FBA-0165C2CCDB8B} (GameControl Class) - http://www.midasplayer.com/midasa.cab
O16 - DPF: {1D4DB7D2-6EC9-47A3-BD87-1E41684E07BB} - http://ak.imgfarm.com/images/nocache/funwebproducts/ei/SmileyCentralFWBInitialSetup1.0.0.15.cab
O16 - DPF: {406B5949-7190-4245-91A9-30A17DE16AD0} (Snapfish Activia) - http://www.snapfish.co.uk/SnapfishUKActivia.cab
O16 - DPF: {4F1E5B1A-2A80-42CA-8532-2D05CB959537} (MSN Photo Upload Tool) - http://spaces.msn.com//PhotoUpload/MsnPUpld.cab
O16 - DPF: {6F750200-1362-4815-A476-88533DE61D0C} (Ofoto Upload Manager Class) - http://www.kodakgallery.com/downloads/BUM/BUM_WIN_IE_1/axofupld.cab
O16 - DPF: {75D1F3B2-2A21-11D7-97B9-0010DC2A6243} - http://secure2.comned.com/signuptemplates/ActiveSecurity.cab
O16 - DPF: {7CA3D0A3-7E2E-4AAB-A75E-FAB8ECA8BD95} (Skilljam Game Player Object) - http://skill.skilljam.com/ssp/SSP.cab
O16 - DPF: {861FDA2A-2B57-4BDA-8B8B-305C9D5D8604} (_Multimedia Player) - http://www.pussyharem.com/stream/mmp.cab
O16 - DPF: {8E0D4DE5-3180-4024-A327-4DFAD1796A8D} (MessengerStatsClient Class) - http://messenger.zone.msn.com/binary/MessengerStatsClient.cab31267.cab
O16 - DPF: {B38870E4-7ECB-40DA-8C6A-595F0A5519FF} (MsnMessengerSetupDownloadControl Class) - http://messenger.msn.com/download/MsnMessengerSetupDownloader.cab
O16 - DPF: {FF3F0F03-0F01-131A-A3F9-08F02B23E0CC} - http://207.226.177.98/dba2218.exe
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - "C:\PROGRA~1\MSNMES~1\msgrapp.dll" (file missing)
O20 - Winlogon Notify: igfxcui - C:\WINDOWS\SYSTEM32\igfxsrvc.dll
O20 - Winlogon Notify: NavLogon - C:\WINDOWS\System32\NavLogon.dll
O20 - Winlogon Notify: WRNotifier - WRLogonNTF.dll (file missing)
O23 - Service: BrSplService (Brother XP spl Service) - brother Industries Ltd - C:\WINDOWS\System32\brsvc01a.exe
O23 - Service: Creative Service for CDROM Access - Creative Technology Ltd - C:\WINDOWS\System32\CTsvcCDA.EXE
O23 - Service: DefWatch - Symantec Corporation - C:\Program Files\NavNT\defwatch.exe
O23 - Service: Norton AntiVirus Client (Norton AntiVirus Server) - Symantec Corporation - C:\Program Files\NavNT\rtvscan.exe
... thanks for looking / helping