I have no idea what's going on, but sometimes my computer switches windows by itself, beeps, and ALT-TABs to other apps. Here's my log:

Logfile of HijackThis v1.99.1
Scan saved at 5:47:22 PM, on 12/9/2006
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

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\Ati2evxx.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Symantec\LiveUpdate\ALUSchedulerSvc.exe
C:\WINDOWS\system32\CTsvcCDA.exe
C:\WINDOWS\eHome\ehRecvr.exe
C:\WINDOWS\eHome\ehSched.exe
C:\Program Files\Common Files\Microsoft Shared\VS7Debug\mdm.exe
c:\program files\microsoft corporation\msn remote record service\remoterecordclient.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\ehome\ehtray.exe
C:\WINDOWS\stsystra.exe
C:\WINDOWS\system32\Rundll32.exe
C:\Program Files\Creative\SBAudigy\Surround Mixer\CTSysVol.exe
C:\Program Files\Microsoft Corporation\MSN Remote Record service\rrtray.exe
C:\DOCUME~1\Hershal\LOCALS~1\Temp\clclean.0001
C:\Program Files\Creative\MediaSource\Detector\CTDetect.exe
C:\WINDOWS\system32\dllhost.exe
C:\WINDOWS\system32\wscntfy.exe
C:\Program Files\Common Files\Creative Labs Shared\Service\CreativeLicensing.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\eHome\ehmsas.exe
C:\Program Files\Google\GoogleToolbarNotifier\1.2.908.5008\GoogleToolbarNotifier.exe
C:\WINDOWS\Downloaded Program Files\TransferMgr.exe
C:\Program Files\Common Files\Symantec Shared\CCPD-LC\symlcsvc.exe
C:\Program Files\Microsoft Student\Microsoft Math 2007\ENCCALC.EXE
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Security Stronghold\SS True Sword\TrueSword.exe
C:\WINDOWS\system32\inetsrv\inetinfo.exe
C:\Documents and Settings\Hershal\My Documents\download\Hijackthis\HijackThis.exe

R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.dell.com
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.dell.com
O2 - BHO: (no name) - AutorunsDisabled - (no file)
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 6.0\Acrobat\ActiveX\AcroIEHelper.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.5.0_06\bin\ssv.dll
O2 - BHO: Norton Internet Security 2006 - {9ECB9560-04F9-4bbc-943D-298DDF1699E1} - C:\Program Files\Common Files\Symantec Shared\AdBlocking\NISShExt.dll
O2 - BHO: NAV Helper - {A8F38D8D-E480-4D52-B7A2-731BB6995FDD} - C:\Program Files\Norton Internet Security\Norton AntiVirus\NavShExt.dll
O2 - BHO: AcroIEToolbarHelper Class - {AE7CD045-E861-484f-8273-0445EE161910} - C:\Program Files\Adobe\Acrobat 6.0\Acrobat\AcroIEFavClient.dll
O2 - BHO: GoogleAFE - {CA6319C0-31B7-401E-A518-A07C3DB8F777} - c:\Program Files\GoogleAFE\GoogleAE.dll
O3 - Toolbar: (no name) - {0BF43445-2F28-4351-9252-17FE6E806AA0} - (no file)
O3 - Toolbar: Norton Internet Security 2006 - {0B53EAC3-8D69-4b9e-9B19-A37C9A5676A7} - C:\Program Files\Common Files\Symantec Shared\AdBlocking\NISShExt.dll
O3 - Toolbar: Norton AntiVirus - {C4069E3A-68F1-403E-B40E-20066696354B} - C:\Program Files\Norton Internet Security\Norton AntiVirus\NavShExt.dll
O3 - Toolbar: Adobe PDF - {47833539-D0C5-4125-9FA8-0819E2EAAC93} - C:\Program Files\Adobe\Acrobat 6.0\Acrobat\AcroIEFavClient.dll
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\program files\google\googletoolbar2.dll
O4 - HKLM\..\Run: [ehTray] C:\WINDOWS\ehome\ehtray.exe
O4 - HKLM\..\Run: [SigmatelSysTrayApp] stsystra.exe
O4 - HKLM\..\Run: [MBMon] Rundll32 CTMBHA.DLL,MBMon
O4 - HKLM\..\Run: [UpdReg] C:\WINDOWS\UpdReg.EXE
O4 - HKLM\..\Run: [ISUSPM Startup] "C:\Program Files\Common Files\InstallShield\UpdateService\isuspm.exe" -startup
O4 - HKLM\..\Run: [CTSysVol] C:\Program Files\Creative\SBAudigy\Surround Mixer\CTSysVol.exe /r
O4 - HKLM\..\Run: [RRTray] "C:\Program Files\Microsoft Corporation\MSN Remote Record service\rrtray.exe"
O4 - HKCU\..\Run: [Creative Detector] "C:\Program Files\Creative\MediaSource\Detector\CTDetect.exe" /R
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MI1933~1\Office10\EXCEL.EXE/3000
O9 - Extra button: (no name) - AutorunsDisabled - (no file)
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: Encarta Search Bar - {B205A35E-1FC4-4CE3-818B-899DBBB3388C} - C:\Program Files\Common Files\Microsoft Shared\Encarta Search Bar\ENCSBAR.DLL
O9 - Extra button: (no name) - {CD67F990-D8E9-11d2-98FE-00C0F0318AFE} - (no file)
O16 - DPF: {01A88BB1-1174-41EC-ACCB-963509EAE56B} (SysProWmi Class) - http://support.dell.com/systemprofiler/SysPro.CAB
O16 - DPF: {17492023-C23A-453E-A040-C7C580BBF700} (Windows Genuine Advantage Validation Tool) - http://go.microsoft.com/fwlink/?linkid=39204
O16 - DPF: {39B0684F-D7BF-4743-B050-FDC3F48F7E3B} (FilePlanet Download Control Class) - http://www.fileplanet.com/fpdlmgr/cabs/FPDC_2.1.2.76.cab
O16 - DPF: {6E32070A-766D-4EE6-879C-DC1FA91D2FC3} (MUWebControl Class) - http://update.microsoft.com/microsoftupdat…b?1150687115927
O16 - DPF: {6E5A37BF-FD42-463A-877C-4EB7002E68AE} (Housecall ActiveX 6.5) - http://housecall65.trendmicro.com/housecal…ivex/hcImpl.cab
O16 - DPF: {7C896371-4B7F-4B34-95B1-24851F5DED24} (Microsoft Virtual Server VMRC Control) - http://whizzingcomet/VirtualServer/activex…tiveXClient.cab
O16 - DPF: {82774781-8F4E-11D1-AB1C-0000F8773BF0} (DLC Class) - https://transfers.ds.microsoft.com/FTM/Tran…ransferCtrl.cab
O16 - DPF: {B1826A9F-4AA0-4510-BA77-9013E74E4B9B} - http://www.trendmicro.com/spyware-scan/as4web.cab
O16 - DPF: {BE833F39-1E0C-468C-BA70-25AAEE55775E} (System Requirements Lab) - http://www.systemrequirementslab.com/sysreqlab.cab
O16 - DPF: {D1E7CBDA-E60E-4970-A01C-37301EF7BF98} (Measurement Services Client v.3.7) - http://gameadvisor.futuremark.com/global/msc37.cab
O16 - DPF: {E87F6C8E-16C0-11D3-BEF7-009027438003} (Persits Software XUpload) - http://www.projectmates.com/Projectmates/JUpload/XUpload.ocx
O16 - DPF: {EF791A6B-FC12-4C68-99EF-FB9E207A39E6} (McFreeScan Class) - http://download.mcafee.com/molbin/iss-loc/…769/mcfscan.cab
O18 - Protocol: ms-help - {314111C7-A502-11D2-BBCA-00C04F8EC294} - C:\Program Files\Common Files\Microsoft Shared\Help\hxds.dll
O20 - Winlogon Notify: WgaLogon - C:\WINDOWS\SYSTEM32\WgaLogon.dll
O23 - Service: ATI Smart - Unknown owner - C:\WINDOWS\system32\ati2sgag.exe
O23 - Service: Automatic LiveUpdate Scheduler - Symantec Corporation - C:\Program Files\Symantec\LiveUpdate\ALUSchedulerSvc.exe
O23 - Service: Symantec Password Validation (ccPwdSvc) - Symantec Corporation - C:\Program Files\Common Files\Symantec Shared\ccPwdSvc.exe
O23 - Service: COM Host (comHost) - Symantec Corporation - C:\Program Files\Norton Internet Security\comHost.exe
O23 - Service: Creative Labs Licensing Service - Creative Labs - C:\Program Files\Common Files\Creative Labs Shared\Service\CreativeLicensing.exe
O23 - Service: Creative Service for CDROM Access - Creative Technology Ltd - C:\WINDOWS\system32\CTsvcCDA.exe
O23 - Service: GEARSecurity - GEAR Software - C:\WINDOWS\System32\GEARSec.exe
O23 - Service: Imapi Helper - Alex Feinman - C:\Program Files\Alex Feinman\ISO Recorder\ImapiHelper.exe
O23 - Service: LiveUpdate - Symantec Corporation - C:\PROGRA~1\Symantec\LIVEUP~1\LUCOMS~1.EXE
O23 - Service: Intel NCS NetService (NetSvc) - Intel® Corporation - C:\Program Files\Intel\PROSetWired\NCS\Sync\NetSvc.exe
O23 - Service: Remote Record Service (RemoteRecord) - - c:\program files\microsoft corporation\msn remote record service\remoterecordclient.exe
O23 - Service: Symantec Network Drivers Service (SNDSrvc) - Symantec Corporation - C:\Program Files\Common Files\Symantec Shared\SNDSrvc.exe
O23 - Service: Symantec SPBBCSvc (SPBBCSvc) - Symantec Corporation - C:\Program Files\Common Files\Symantec Shared\SPBBC\SPBBCSvc.exe
O23 - Service: Symantec Core LC - Symantec Corporation - C:\Program Files\Common Files\Symantec Shared\CCPD-LC\symlcsvc.exe

Help would be appreciated…