Recently, I have also noticed this problem with the false history in IE7. there are websites such as bitamo.com, nexoa.com, and xitamo.com among others in my history, and they keep appearing, searching for things from toilet seat flappers to lcd televisions.
here is a hijack this logfile.
Logfile of HijackThis v1.99.1
Scan saved at 12:47:59 PM, on 11/10/2006
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\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\Program Files\Windows Defender\MsMpEng.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\LEXBCES.EXE
C:\WINDOWS\system32\LEXPPS.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Yahoo!\Antivirus\ISafe.exe
C:\Program Files\Common Files\Microsoft Shared\VS7Debug\mdm.exe
C:\WINDOWS\System32\tcpsvcs.exe
C:\WINDOWS\System32\snmp.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Yahoo!\Antivirus\VetMsg.exe
C:\WINDOWS\wanmpsvc.exe
C:\Program Files\UltraVNC\WinVNC.exe
C:\WINDOWS\system32\SearchIndexer.exe
C:\WINDOWS\system32\fxssvc.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\System32\DSentry.exe
C:\Program Files\Roxio\Easy CD Creator 5\DirectCD\DirectCD.exe
C:\WINDOWS\system32\taskswitch.exe
C:\Program Files\Dell AIO Printer A940\dlbabmgr.exe
C:\Program Files\Google\Gmail Notifier\gnotify.exe
C:\Program Files\Google\Google Desktop Search\GoogleDesktop.exe
C:\Program Files\QuickTime\qttask.exe
C:\PROGRA~1\SBCSEL~1\SMARTB~1\MotiveSB.exe
C:\Program Files\Common Files\Real\Update_OB\realsched.exe
C:\Program Files\Picasa2\PicasaMediaDetector.exe
C:\Program Files\Dell AIO Printer A940\dlbabmon.exe
C:\Program Files\Java\jre1.5.0_07\bin\jusched.exe
C:\PROGRA~1\Yahoo!\browser\ybrwicon.exe
C:\Program Files\Yahoo!\Antivirus\CAVTray.exe
C:\Program Files\Google\Google Desktop Search\GoogleDesktopIndex.exe
C:\Program Files\Yahoo!\Antivirus\CAVRID.exe
C:\PROGRA~1\Yahoo!\YOP\yop.exe
C:\Program Files\Windows Defender\MSASCui.exe
C:\Program Files\Dell Support\DSAgnt.exe
C:\PROGRA~1\Yahoo!\browser\ycommon.exe
C:\Program Files\Microsoft ActiveSync\WCESCOMM.EXE
C:\Program Files\AIM\aim.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\The Weather Channel FW\Desktop Weather\DesktopWeather.exe
C:\Program Files\Reuters\Desktopticker\ticker.exe
C:\Program Files\Digital Line Detect\DLG.exe
C:\Program Files\Google\Google Updater\GoogleUpdater.exe
C:\Program Files\Google\Web Accelerator\GoogleWebAccWarden.exe
C:\Documents and Settings\Karthik Venkatesh\Start Menu\Programs\Startup\iexplore.exe
C:\Program Files\Google\Google Desktop Search\GoogleDesktopCrawl.exe
C:\Program Files\SBC Self Support Tool\bin\mpbtn.exe
C:\Program Files\Google\Web Accelerator\googlewebaccclient.exe
C:\WINDOWS\system32\SearchFilterHost.exe
C:\WINDOWS\system32\SearchProtocolHost.exe
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Ad-Aware.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Spybot - Search & Destroy\SpybotSD.exe
C:\Documents and Settings\Karthik Venkatesh\Desktop\HijackThis.exe
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.dellnet.com/
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 Bar = http://red.clientapps.yahoo.com/customize/ie/defaults/sb/sbcydsl/*http://www.yahoo.com/search/ie.html
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\Windows\CurrentVersion\Internet Settings,AutoConfigURL = http://localhost:9100/proxy.pac
R3 - URLSearchHook: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn0\yt.dll
O2 - BHO: Yahoo! Toolbar Helper - {02478D38-C3F9-4EFB-9B51-7695ECA05670} - C:\Program Files\Yahoo!\Companion\Installs\cpn0\yt.dll
O2 - BHO: Adobe PDF Reader Link Helper - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - C:\Program Files\Spybot - Search & Destroy\SDHelper.dll
O2 - BHO: Google Web Accelerator Helper - {69A87B7D-DE56-4136-9655-716BA50C19C7} - C:\Program Files\Google\Web Accelerator\GoogleWebAccToolbar.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.5.0_07\bin\ssv.dll
O2 - BHO: Viewpoint Toolbar BHO - {A7327C09-B521-4EDB-8509-7D2660C9EC98} - C:\Program Files\Viewpoint\Viewpoint Toolbar\ViewBarBHO.dll
O2 - BHO: &Google Notebook - {CCCCCCD3-666F-4F81-8B69-745DE9F6D897} - C:\Program Files\Google\Google Notebook\gnotes1.0.2.6-654567178.dll
O3 - Toolbar: Viewpoint Toolbar - {F8AD5AA5-D966-4667-9DAF-2561D68B2012} - C:\Program Files\Viewpoint\Viewpoint Toolbar\ViewBar.dll
O3 - Toolbar: Google Web Accelerator - {DB87BFA2-A2E3-451E-8E5A-C89982D87CBF} - C:\Program Files\Google\Web Accelerator\GoogleWebAccToolbar.dll
O3 - Toolbar: &Google Notebook - {CCCCCCDB-4DDB-4703-95D4-DD2C526397BF} - C:\Program Files\Google\Google Notebook\gnotes1.0.2.6-654567178.dll
O3 - Toolbar: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn0\yt.dll
O4 - HKLM\..\Run: [DVDSentry] C:\WINDOWS\System32\DSentry.exe
O4 - HKLM\..\Run: [AdaptecDirectCD] "C:\Program Files\Roxio\Easy CD Creator 5\DirectCD\DirectCD.exe"
O4 - HKLM\..\Run: [CoolSwitch] C:\WINDOWS\system32\taskswitch.exe
O4 - HKLM\..\Run: [Dell AIO Printer A940] "C:\Program Files\Dell AIO Printer A940\dlbabmgr.exe"
O4 - HKLM\..\Run: [{0228e555-4f9c-4e35-a3ec-b109a192b4c2}] C:\Program Files\Google\Gmail Notifier\gnotify.exe
O4 - HKLM\..\Run: [Google Desktop Search] "C:\Program Files\Google\Google Desktop Search\GoogleDesktop.exe" /startup
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [Motive SmartBridge] C:\PROGRA~1\SBCSEL~1\SMARTB~1\MotiveSB.exe
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Common Files\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [Picasa Media Detector] C:\Program Files\Picasa2\PicasaMediaDetector.exe
O4 - HKLM\..\Run: [KernelFaultCheck] %systemroot%\system32\dumprep 0 -k
O4 - HKLM\..\Run: [Openwares LiveUpdate] C:\Program Files\LiveUpdate\LiveUpdate.exe
O4 - HKLM\..\Run: [WinVNC] "C:\Program Files\UltraVNC\WinVNC.exe" -servicehelper
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Program Files\Java\jre1.5.0_07\bin\jusched.exe
O4 - HKLM\..\Run: [YBrowser] C:\PROGRA~1\Yahoo!\browser\ybrwicon.exe
O4 - HKLM\..\Run: [CaAvTray] "C:\Program Files\Yahoo!\Antivirus\CAVTray.exe"
O4 - HKLM\..\Run: [CAVRID] "C:\Program Files\Yahoo!\Antivirus\CAVRID.exe"
O4 - HKLM\..\Run: [YOP] C:\PROGRA~1\Yahoo!\YOP\yop.exe /autostart
O4 - HKLM\..\Run: [Windows Defender] "C:\Program Files\Windows Defender\MSASCui.exe" -hide
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [DellSupport] "C:\Program Files\Dell Support\DSAgnt.exe" /startup
O4 - HKCU\..\Run: [H/PC Connection Agent] "C:\Program Files\Microsoft ActiveSync\WCESCOMM.EXE"
O4 - HKCU\..\Run: [ESPN BottomLine] C:\Program Files\ESPN\BottomLine\bline.exe
O4 - HKCU\..\Run: [AIM] C:\Program Files\AIM\aim.exe -cnetwait.odl
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [DW4] "C:\Program Files\The Weather Channel FW\Desktop Weather\DesktopWeather.exe"
O4 - HKCU\..\Run: [Reuters Desktop Ticker] C:\Program Files\Reuters\Desktopticker\ticker.exe
O4 - Startup: iexplore.exe
O4 - Global Startup: Adobe Reader Speed Launch.lnk = C:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O4 - Global Startup: AT&T Self Support Tool.lnk = C:\Program Files\SBC Self Support Tool\bin\matcli.exe
O4 - Global Startup: Digital Line Detect.lnk = ?
O4 - Global Startup: Google Updater.lnk = C:\Program Files\Google\Google Updater\GoogleUpdater.exe
O4 - Global Startup: Run Google Web Accelerator.lnk = C:\Program Files\Google\Web Accelerator\GoogleWebAccWarden.exe
O8 - Extra context menu item: &AIM Search - res://C:\Program Files\AIM Toolbar\AIMBar.dll/aimsearch.htm
O8 - Extra context menu item: &Viewpoint Search - res://C:\Program Files\Viewpoint\Viewpoint Toolbar\ViewBar.dll/CXTSEARCH.HTML
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: Note this (Google Note&book) - res://C:\Program Files\Google\Google Notebook\gnotes1.0.2.6-654567178.dll/gn_menu1.html
O8 - Extra context menu item: Note this (Google Notebook) - res://C:\Program Files\Google\Google Notebook\gnotes1.0.2.6-654567178.dll/gn_menu2.html
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_07\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_07\bin\ssv.dll
O9 - Extra button: Create Mobile Favorite - {2EAF5BB1-070F-11D3-9307-00C04FAE2D4F} - C:\Program Files\Microsoft ActiveSync\inetrepl.dll
O9 - Extra button: (no name) - {2EAF5BB2-070F-11D3-9307-00C04FAE2D4F} - C:\Program Files\Microsoft ActiveSync\inetrepl.dll
O9 - Extra 'Tools' menuitem: Create Mobile Favorite... - {2EAF5BB2-070F-11D3-9307-00C04FAE2D4F} - C:\Program Files\Microsoft ActiveSync\inetrepl.dll
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~3\Office12\REFIEBAR.DLL
O9 - Extra button: AIM - {AC9E2541-2814-11d5-BC6D-00B0D0A1DE45} - C:\Program Files\AIM\aim.exe
O9 - Extra button: (no name) - {CD67F990-D8E9-11d2-98FE-00C0F0318AFE} - (no file)
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:\Program Files\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O9 - Extra button: WeatherBug - {AF6CABAB-61F9-4f12-A198-B7D41EF1CB52} - C:\Program Files\AWS\WeatherBug\Weather.exe (file missing) (HKCU)
O11 - Options group: [INTERNATIONAL] International*
O16 - DPF: {5F8469B4-B055-49DD-83F7-62B522420ECC} (Facebook Photo Uploader Control) - http://upload.facebook.com/controls/FacebookPhotoUploader.cab
O16 - DPF: {DF6A0F17-0B1E-11D4-829D-00C04F6843FE} (Microsoft Office Tools on the Web Control) - http://dgl.microsoft.com/downloads/outc.cab
O18 - Protocol: ms-help - {314111C7-A502-11D2-BBCA-00C04F8EC294} - C:\Program Files\Common Files\Microsoft Shared\Help\hxds.dll
O18 - Filter hijack: text/xml - {807563E5-5146-11D5-A672-00B0D022E945} - C:\PROGRA~1\COMMON~1\MICROS~1\OFFICE12\MSOXMLMF.DLL
O20 - AppInit_DLLs: C:\PROGRA~1\Google\GOOGLE~2\GOEC62~1.DLL
O20 - Winlogon Notify: LMIinit - C:\WINDOWS\SYSTEM32\LMIinit.dll
O20 - Winlogon Notify: WgaLogon - C:\WINDOWS\SYSTEM32\WgaLogon.dll
O20 - Winlogon Notify: winzwr32 - winzwr32.dll (file missing)
O21 - SSODL: WPDShServiceObj - {AAA288BA-9A4C-45B0-95D7-94D524869DB5} - C:\WINDOWS\system32\WPDShServiceObj.dll
O23 - Service: CAISafe - Computer Associates International, Inc. - C:\Program Files\Yahoo!\Antivirus\ISafe.exe
O23 - Service: Canon Camera Access Library 8 (CCALib8) - Canon Inc. - C:\Program Files\Canon\CAL\CALMAIN.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Common Files\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: LexBce Server (LexBceS) - Lexmark International, Inc. - C:\WINDOWS\system32\LEXBCES.EXE
O23 - Service: LogMeIn - Unknown owner - C:\Program Files\LogMeIn\LogMeIn.exe (file missing)
O23 - Service: Intel(R) NMS (NMSSvc) - Intel Corporation - C:\WINDOWS\System32\NMSSvc.exe
O23 - Service: VET Message Service (VETMSGNT) - Computer Associates International, Inc. - C:\Program Files\Yahoo!\Antivirus\VetMsg.exe
O23 - Service: WAN Miniport (ATW) Service (WANMiniportService) - America Online, Inc. - C:\WINDOWS\wanmpsvc.exe
O23 - Service: VNC Server (winvnc) - Unknown owner - C:\Program Files\UltraVNC\WinVNC.exe" -service (file missing)
O23 - Service: YPCService - Yahoo! Inc. - C:\WINDOWS\SYSTEM32\YPCSER~1.EXE
iwould really appreciate it if you got back to me