My computer is slow when searching for a file locally or when accessing multimedia files over the internet. CPU goes to 100% and the PC becomes unusable. Also the media does not play well. Please help. I am also attaching the hijackthis.log.

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Logfile of HijackThis v1.97.7
Scan saved at 9:31:44 AM, on 11/27/2003
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:\Program Files\Common Files\Symantec Shared\ccSetMgr.exe
C:\Program Files\Common Files\Symantec Shared\ccEvtMgr.exe
C:\WINDOWS\system32\spoolsv.exe
C:\PROGRA~1\Grisoft\AVG6\avgserv.exe
C:\Program Files\AVPersonal\AVWUPSRV.EXE
C:\Marimba\CASTAN~1\Tuner.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Norton AntiVirus\navapsvc.exe
C:\WINDOWS\System32\nvsvc32.exe
C:\Marimba\CASTAN~1\lib\jre\bin\jre.exe
C:\Program Files\Norton AntiVirus\SAVScan.exe
C:\WINDOWS\System32\pctspk.exe
C:\Program Files\Speed Disk\nopdb.exe
C:\PROGRA~1\Grisoft\AVG6\avgcc32.exe
C:\Program Files\Common Files\Real\Update_OB\realsched.exe
C:\Program Files\Common Files\Symantec Shared\ccApp.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Common Files\Symantec Shared\CCPD-LC\symlcsvc.exe
C:\PROGRA~1\VERIZO~1\SUPPOR~1\SMARTB~1\MotiveSB.exe
C:\WINDOWS\System32\RUNDLL32.EXE
C:\WINDOWS\system32\ZoneLabs\vsmon.exe
C:\Program Files\Zone Labs\ZoneAlarm\zonealarm.exe
C:\WINDOWS\System32\taskmgr.exe
C:\WINDOWS\System32\wuauclt.exe
C:\Program Files\Internet Explorer\IEXPLORE.EXE
C:\Documents and Settings\user\Local Settings\Temp\Temporary Directory 1 for hijackthis.zip\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Window Title = Microsoft Internet Explorer provided by Verizon Online
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = 127.0.0.1
R3 - URLSearchHook: (no name) - {D6DFF6D8-B94B-4720-B730-1C38C7065C3B} - (no file)
F2 - REG:system.ini: UserInit=C:\WINDOWS\System32\Userinit.exe
O2 - BHO: (no name) - {000020DD-C72E-4113-AF77-DD56626C6C42} - (no file)
O2 - BHO: (no name) - {02478D38-C3F9-4efb-9B51-7695ECA05670} - C:\Program Files\Yahoo!\Companion\Installs\cpn\ycomp5_2_3_0.dll
O2 - BHO: (no name) - {029CA12C-89C1-46a7-A3C7-82F2F98635CB} - C:\Program Files\Kontiki\bin\bh309190.dll
O2 - BHO: (no name) - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 5.0\Reader\ActiveX\AcroIEHelper.ocx
O2 - BHO: (no name) - {4A368E80-174F-4872-96B5-0B27DDD11DB2} - C:\Program Files\SpywareGuard\dlprotect.dll
O2 - BHO: (no name) - {4E7BD74F-2B8D-469E-C0FF-FD60B590A87D} - C:\PROGRA~1\COMMON~1\Real\Toolbar\realbar.dll
O2 - BHO: NAV Helper - {BDF3E430-B101-42AD-A544-FADC6B084872} - C:\Program Files\Norton AntiVirus\NavShExt.dll
O3 - Toolbar: REALBAR - {4E7BD74F-2B8D-469E-C0FF-FD60B590A87D} - C:\PROGRA~1\COMMON~1\Real\Toolbar\realbar.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O3 - Toolbar: Yahoo! Companion - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn\ycomp5_2_3_0.dll
O3 - Toolbar: Norton AntiVirus - {42CDD1BF-3FFB-4238-8AD1-7859DF00B1D6} - C:\Program Files\Norton AntiVirus\NavShExt.dll
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\System32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [PCTVOICE] pctspk.exe
O4 - HKLM\..\Run: [AVG_CC] C:\PROGRA~1\Grisoft\AVG6\avgcc32.exe /STARTUP
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Common Files\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [ccApp] "C:\Program Files\Common Files\Symantec Shared\ccApp.exe"
O4 - HKLM\..\Run: [NAV CfgWiz] C:\Program Files\Common Files\Symantec Shared\CfgWiz.exe /GUID NAV /CMDLINE "REBOOT"
O4 - HKLM\..\Run: [Motive SmartBridge] C:\PROGRA~1\VERIZO~1\SUPPOR~1\SMARTB~1\MotiveSB.exe
O4 - HKCU\..\Run: [NvMediaCenter] RUNDLL32.EXE C:\WINDOWS\System32\NVMCTRAY.DLL,NvTaskbarInit
O4 - HKCU\..\Run: [SpyKiller] C:\GUM\Virus\Spykiller\spykiller.exe /startup
O4 - Global Startup: ZoneAlarm.lnk = C:\Program Files\Zone Labs\ZoneAlarm\zonealarm.exe
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office10\EXCEL.EXE/3000
O8 - Extra context menu item: Get It With Kontiki - res://C:\Program Files\Kontiki\bin\bh309190.dll/201
O9 - Extra 'Tools' menuitem: Sun Java Console (HKLM)
O9 - Extra button: Control Pad (HKLM)
O9 - Extra 'Tools' menuitem: Control Pad (HKLM)
O9 - Extra button: Messenger (HKLM)
O9 - Extra 'Tools' menuitem: Yahoo! Messenger (HKLM)
O9 - Extra button: Messenger (HKLM)
O9 - Extra 'Tools' menuitem: Messenger (HKLM)
O10 - Unknown file in Winsock LSP: c:\program files\antiy labs\agb4\agbfilt.dll
O10 - Unknown file in Winsock LSP: c:\program files\antiy labs\agb4\agbfilt.dll
O10 - Unknown file in Winsock LSP: c:\program files\antiy labs\agb4\agbfilt.dll
O10 - Unknown file in Winsock LSP: c:\program files\antiy labs\agb4\agbfilt.dll
O12 - Plugin for .spop: C:\Program Files\Internet Explorer\Plugins\NPDocBox.dll
O16 - DPF: {0246ECA8-996F-11D1-BE2F-00A0C9037DFE} (TDServer Control) - http://www.andhrajyothy.com/wfplayer/tdserver.cab
O16 - DPF: {02BF25D5-8C17-4B23-BC80-D3488ABDDC6B} (QuickTime Object) - http://www.apple.com/qtactivex/qtplugin.cab
O16 - DPF: {166B1BCA-3F9C-11CF-8075-444553540000} (Shockwave ActiveX Control) - http://download.macromedia.com/pub/shockwave/cabs/director/sw.cab
O16 - DPF: {1954A4B1-9627-4CF2-A041-58AA2045CB35} (Brix6ie Control) - http://a19.g.akamai.net/7/19/7125/1268/ftp.coupons.com/v6/brix6ie.cab
O16 - DPF: {19E28AFC-EAE3-4CE5-AC83-2407B42F57C9} (MSSecurityAdvisor Class) - http://download.microsoft.com/download/0/5/c/05c905f4-dd30-427d-a3de-373c3e5552fc/msSecAdv.cab?1069608459250
O16 - DPF: {2BC66F54-93A8-11D3-BEB6-00105AA9B6AE} (Symantec AntiVirus scanner) - http://security.symantec.com/sscv6/SharedContent/vc/bin/AvSniff.cab
O16 - DPF: {30528230-99F7-4BB4-88D8-FA1D4F56A2AB} (YInstStarter Class) - http://download.yahoo.com/dl/installs/yinst0309.cab
O16 - DPF: {41F17733-B041-4099-A042-B518BB6A408C} - http://a1540.g.akamai.net/7/1540/52/20021205/qtinstall.info.apple.com/borris/us/win/QuickTimeInstaller.exe
O16 - DPF: {644E432F-49D3-41A1-8DD5-E099162EEEC5} (Symantec RuFSI Utility Class) - http://security.symantec.com/sscv6/SharedContent/common/bin/cabsa.cab
O16 - DPF: {74D05D43-3236-11D4-BDCD-00C04F9A3B61} (HouseCall Control) - http://a840.g.akamai.net/7/840/537/0fb5e03023def1/housecall.antivirus.com/housecall/xscan53.cab
O16 - DPF: {90C9629E-CD32-11D3-BBFB-00105A1F0D68} (InstallShield International Setup Player) - http://www.installengine.com/engine/isetup.cab
O16 - DPF: {917623D1-D8E5-11D2-BE8B-00104B06BDE3} (CamImage Class) - http://geotoo.mkm-wpe.net/activex/AxisCamControl.ocx
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab
O16 - DPF: {DF6A0F17-0B1E-11D4-829D-00C04F6843FE} (Microsoft Office Tools on the Web Control) - http://dgl.microsoft.com/downloads/outc.cab
O16 - DPF: {EF791A6B-FC12-4C68-99EF-FB9E207A39E6} (McFreeScan Class) - http://download.mcafee.com/molbin/iss-loc/vso/en-us/tools/mcfscan/1,5,0,4305/mcfscan.cab
O16 - DPF: {F8DCFE8E-7B2B-4FF8-B8A7-A52B6C4B0170} (AvzPrintingComponent Class) - http://nesteggz.nesteggz.com/NEUtility/PrintingComponents/AvzPrintingActiveX1600.cab

Hello,
I suggest two solutions:
1) to clean your Internet Explorer program:
Control panel/program "add&remove programs/find "internet explorer and his tools"/ send it / 3 options, one is "repair" / send the "repair" procedure/ IE will scan for damaged or corrupted files and will repair it / you will need to reboot your computer at the end of procedure.
2) to download two excellents freewares to avoid cookies spywares which harass memory into your computer:
A) AdAware 6.0
http://www.lavasoftusa.com/english/support/download/
B) SpywareBlaster
http://www.wilderssecurity.net/spywareblaster.html
Good luck

Had a similar problem:

My problem was with Norton's NAV 2k4 Autoprotect (SAVScan.exe) trying to scan java scripts (*.js)

Norton's suggested work-around was to exclude *.js from Autoprotect files:

To add .js files to Auto-Protect exclusions, please do the following:

1. Start NAV.
2. Click Options. If you see a menu, click Norton AntiVirus.
3. In the left pane under System, click Auto-Protect.
Click Exclusions.
4. In the right pane, click New.
5. In the Item box, type *.js and click OK.
6. Open your browser and test the connection.

Seems to me that this leaves me open to malicious .js scripts, but it did improve my performance dramatically.

Suggestion: Try this, and if it DOESN'T work, reinstate *.js scanning!

Good luck