Hi I have had an unusually high cpu usage for the past 2 days. Especially when using firefox or safari or similar programs. I have over 300GB of hard disk space and almost 3gb of ram. I have never had over 80% cpu usage even even using high-end games but now the cpu usage is over 95% at times with just firefox open. I have ran multiple scans using norton, spybot, avg, ccleaner, super anti-spyware and still the problem presists. I even dismantled my system and cleaned out both the fans to no avail. I am a bit hesitant about reformatting as I have abt 200gb of data on my drives. Now as a last resort I am asking for outside help. I am posting the hijackthis log below:
Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 09:58:47, on 11/06/2008
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)
Boot mode: Normal

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\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\PROGRA~1\AVG\AVG8\avgwdsvc.exe
C:\WINDOWS\eHome\ehRecvr.exe
C:\WINDOWS\eHome\ehSched.exe
C:\WINDOWS\system32\HPZipm12.exe
C:\WINDOWS\System32\snmp.exe
C:\WINDOWS\system32\svchost.exe
C:\Program Files\Sonic\DigitalMedia LE v7\MyDVD LE\USBDeviceService.exe
C:\PROGRA~1\AVG\AVG8\avgrsx.exe
C:\WINDOWS\system32\dllhost.exe
C:\WINDOWS\Explorer.EXE
C:\PROGRA~1\GOTOSO~1\VADERE~1\Vaderetro_oe.exe
C:\WINDOWS\SOUNDMAN.EXE
C:\Program Files\Common Files\Real\Update_OB\realsched.exe
C:\PROGRA~1\AVG\AVG8\avgtray.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\Stardock\ObjectDock\ObjectDock.exe
C:\Program Files\Yahoo!\Widgets\YahooWidgets.exe
C:\Program Files\Yahoo!\Widgets\YahooWidgets.exe
C:\Program Files\Yahoo!\Widgets\YahooWidgets.exe
C:\Program Files\Yahoo!\Widgets\YahooWidgets.exe
C:\Program Files\Yahoo!\Widgets\YahooWidgets.exe
C:\Program Files\Yahoo!\Widgets\YahooWidgets.exe
C:\Program Files\Mozilla Firefox 3 Beta 5\firefox.exe
C:\WINDOWS\system32\taskmgr.exe
D:\Program Files\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.windowstreams.com/
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Int ernet Settings,ProxyOverride = local
O1 - Hosts: 66.98.148.65 auto.search.msn.com
O1 - Hosts: 66.98.148.65 auto.search.msn.es
O2 - BHO: IDM Helper - {0055C089-8582-441B-A0BF-17B458C2A3A8} - D:\Program Files\Internet Download Manager\IDMIECC.dll
O2 - BHO: RealPlayer Download and Record Plugin for Internet Explorer - {3049C3E9-B461-4BC5-8870-4C09146192CA} - C:\Program Files\Real\RealPlayer\rpbrowserrecordplugin.dll
O2 - BHO: WormRadar.com IESiteBlocker.NavFilter - {3CA2F312-6F6E-4B53-A66E-4E65E497C8C0} - C:\Program Files\AVG\AVG8\avgssie.dll
O2 - BHO: Spybot-S&D IE Protection - {53707962-6F74-2D53-2644-206D7942484F} - D:\PROGRA~1\SPYBOT~1\SDHelper.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.6.0_05\bin\ssv.dll
O2 - BHO: Windows Live Sign-in Helper - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files\Common Files\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: AVG Security Toolbar - {A057A204-BACC-4D26-9990-79A187E2698E} - C:\PROGRA~1\AVG\AVG8\AVGTOO~1.DLL
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - c:\program files\google\googletoolbar1.dll
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\program files\google\googletoolbar1.dll
O3 - Toolbar: AVG Security Toolbar - {A057A204-BACC-4D26-9990-79A187E2698E} - C:\PROGRA~1\AVG\AVG8\AVGTOO~1.DLL
O4 - HKLM\..\Run: [Vade Retro Outlook Express] "C:\PROGRA~1\GOTOSO~1\VADERE~1\Vaderetro_oe.ex e"
O4 - HKLM\..\Run: [SoundMan] SOUNDMAN.EXE
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Common Files\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [AVG8_TRAY] C:\PROGRA~1\AVG\AVG8\avgtray.exe
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\RunOnce: [] C:\Program Files\Internet Explorer\iexplore.exe http://www.symantec.com/techsupp/ser...00046.000000b7
O4 - Startup: Stardock ObjectDock.lnk = C:\Program Files\Stardock\ObjectDock\ObjectDock.exe
O4 - Startup: Yahoo! Widgets.lnk = C:\Program Files\Yahoo!\Widgets\YahooWidgets.exe
O8 - Extra context menu item: &Search - ?p=ZKfox000
O8 - Extra context menu item: Add to AMV Convert Tool... - C:\Program Files\MP3 Player Utilities 4.00\AMVConverter\grab.html
O8 - Extra context menu item: Add to AMV Converter... - C:\Program Files\MP3 Player Utilities 4.05\AMVConverter\grab.html
O8 - Extra context menu item: Download all links with IDM - D:\Program Files\Internet Download Manager\IEGetAll.htm
O8 - Extra context menu item: Download FLV video content with IDM - D:\Program Files\Internet Download Manager\IEGetVL.htm
O8 - Extra context menu item: Download with IDM - D:\Program Files\Internet Download Manager\IEExt.htm
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: MediaManager tool grab multimedia file - C:\Program Files\MP3 Player Utilities 4.05\MediaManager\grab.html
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_05\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_05\bin\ssv.dll
O9 - Extra button: Send to OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\PROGRA~1\MICROS~3\Office12\ONBttnIE.dll
O9 - Extra 'Tools' menuitem: S&end to OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\PROGRA~1\MICROS~3\Office12\ONBttnIE.dll
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~3\Office12\REFIEBAR.DLL
O9 - Extra button: Encarta Search Bar - {B205A35E-1FC4-4CE3-818B-899DBBB3388C} - C:\Program Files\Common Files\Microsoft Shared\Encarta Search Bar\ENCSBAR.DLL
O9 - Extra button: Real.com - {CD67F990-D8E9-11d2-98FE-00C0F0318AFE} - C:\WINDOWS\system32\Shdocvw.dll
O9 - Extra button: (no name) - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - D:\PROGRA~1\SPYBOT~1\SDHelper.dll
O9 - Extra 'Tools' menuitem: Spybot - Search & Destroy Configuration - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - D:\PROGRA~1\SPYBOT~1\SDHelper.dll
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe (file missing)
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe (file missing)
O14 - IERESET.INF: START_PAGE_URL=http://dial.blueyonder.co.uk
O16 - DPF: {30528230-99f7-4bb4-88d8-fa1d4f56a2ab} (Installation Support) - C:\Program Files\Yahoo!\Common\Yinsthelper.dll
O16 - DPF: {44990301-3C9D-426D-81DF-AAB636FA4345} (Symantec Script Runner Class) - https://www-secure.symantec.com/tech...bs/tgctlsr.cab
O16 - DPF: {5D6F45B3-9043-443D-A792-115447494D24} (UnoCtrl Class) - http://messenger.zone.msn.com/EN-GB/.../GAME_UNO1.cab
O16 - DPF: {C3F79A2B-B9B4-4A66-B012-3EE46475B072} (MessengerStatsClient Class) - http://messenger.zone.msn.com/binary...t.cab56907.cab
O18 - Protocol: grooveLocalGWS - {88FED34C-F0CA-4636-A375-3CB6248B04CD} - C:\PROGRA~1\MICROS~3\Office12\GR99D3~1.DLL
O18 - Protocol: linkscanner - {F274614C-63F8-47D5-A4D1-FBDDE494F8D1} - C:\Program Files\AVG\AVG8\avgpp.dll
O20 - AppInit_DLLs: avgrsstx.dll
O20 - Winlogon Notify: !SASWinLogon - D:\Program Files\SASWINLO.dll
O23 - Service: ATI Smart - Unknown owner - C:\WINDOWS\system32\ati2sgag.exe
O23 - Service: AVG8 WatchDog (avg8wd) - AVG Technologies CZ, s.r.o. - C:\PROGRA~1\AVG\AVG8\avgwdsvc.exe
O23 - Service: Pml Driver HPZ12 - HP - C:\WINDOWS\system32\HPZipm12.exe
O23 - Service: USBDeviceService - Unknown owner - C:\Program Files\Sonic\DigitalMedia LE v7\MyDVD LE\USBDeviceService.exe

--
End of file - 7601 bytes

Any help will be much appreciated. Thanks.

Cmon guys, 130 views and still no replies. Here is the cpu usage when watching a video on youtube:
(On firefox)
System Idle Usage - 60-80
firefox.exe - 20-40

(On IE7)
System Idle Usage - 70 - 80
iexplorer.exe - 20-30

All the rest of the processes fluctuating btw 0 & 3

System Specs:
Windows XP Media Center Edition
Version 2002, Service Pack 2
Pentium(R) 4 CPU 3.06 GHz
2.63 GB Ram
Master Hard Drive - 80GB
Slave Hard Drive - 300 GB
Video Diver - ATI Radeon (256MB)
Audio Driver- Realtek HD Audio


Here is the data from the performance monitor:
Totals
Handles - 11229
Threads - 510
Processes - 40

Commit Charge (K)
Total - 453628
Limit - 3908356
Peak - 456888

Physical Memory (K)
Total - 2030956
Available - 1368840
System Cache - 581484

Kernel Memory (K)
Total - 60580
Paged - 43736
Nonpaged - 13844

Processes - 40
CPU Usage - 89%
Commit Charge (PF Usage) - 442M/3816M)

Windows open - Mozilla Firefox & Task Manager.