UserFaultCheck Keeps Poping up and Sound and other Devices stop

I have had this problem for about a week or so, it seems UserFaultCheck always pops up every time i start my computer same with DEP (Data Execution Preventation) which prevents Generic Host Process for Win32 Services.

After a short amount of time (5 mins or so) the display of my systems goes from XP to Classic View and then i guess UserFaultCheck fixed that and got it back to XP view but after this happens my operating systems can't get acess to hardware and such. For example if I go to Accerssories -> Volume Control a message will pop up saying 'There are no active mixers available. To install mixer devices, go to Control Panel... etc'

I have done a system restore before which managed to fix the problem in sort of a 'glitchy' way. But after 2 days or so the problem just comes back. But i did have a look in the log files and saw that this program called "Software Distribution Service 3.0' was installed on my computer. I reaserched it and it seems harmless because i got it from the XP update, the problem is i think this is why my computer has been acting strange recently.

EDIT: whenever i start or restart my computer everything seems to be working.... for 5 minutes

Here is a MBAM log file:

Malwarebytes' Anti-Malware 1.31
Database version: 1546
Windows 5.1.2600 Service Pack 3

12/25/2008 10:32:22 PM
mbam-log-2008-12-25 (22-32-11).txt

Scan type: Quick Scan
Objects scanned: 53901
Time elapsed: 2 minute(s), 23 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 1
Registry Values Infected: 0
Registry Data Items Infected: 0
Folders Infected: 0
Files Infected: 1

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
HKEY_LOCAL_MACHINE\SOFTWARE\xpre (Trojan.Downloader) -> No action taken.

Registry Values Infected:
(No malicious items detected)

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
(No malicious items detected)

Files Infected:
C:\Documents and Settings\Owner\Application Data\QNVW601P.dll (Trojan.Agent) -> No action taken.

And here is a Hjacklog:

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 10:34:58 PM, on 12/25/2008
Platform: Windows XP SP3 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.6000.16762)
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:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
C:\Program Files\Alwil Software\Avast4\ashServ.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Bonjour\mDNSResponder.exe
C:\Program Files\COMODO\Firewall\cmdagent.exe
C:\Program Files\Google\Common\Google Updater\GoogleUpdaterService.exe
C:\WINDOWS\system32\svchost.exe
C:\Program Files\CA\SharedComponents\PPRT\bin\ITMRTSVC.exe
C:\Program Files\Java\jre6\bin\jqs.exe
C:\WINDOWS\system32\nvsvc32.exe
C:\WINDOWS\system32\PnkBstrA.exe
C:\WINDOWS\system32\svchost.exe
C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\Rundll32.exe
C:\Program Files\CA\CA Internet Security Suite\cctray\cctray.exe
C:\Program Files\Java\jre6\bin\jusched.exe
C:\Program Files\Creative\SBAudigy\Surround Mixer\CTSysVol.exe
C:\Program Files\HP\HP Software Update\HPWuSchd2.exe
C:\Program Files\PowerISO\PWRISOVM.EXE
C:\WINDOWS\system32\RunDLL32.exe
C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
C:\Program Files\CA\CA Internet Security Suite\CA Anti-Spyware\CAPPActiveProtection.exe
C:\Program Files\CA\CA Internet Security Suite\CA Anti-Spyware\PPCtlPriv.exe
C:\Ad-aware 6\Ad-watch.exe
C:\Program Files\CA\CA Internet Security Suite\ccprovsp.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\COMODO\Firewall\cfp.exe
C:\WINDOWS\system32\RUNDLL32.EXE
C:\Program Files\Windows Live\Messenger\MsnMsgr.Exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\Common Files\Ahead\Lib\NMBgMonitor.exe
C:\Program Files\Creative\Shared Files\CamTray.exe
C:\Program Files\Common Files\Ahead\Lib\NMIndexingService.exe
C:\Program Files\HP\Digital Imaging\bin\hpqtra08.exe
C:\Program Files\Common Files\Ahead\Lib\NMIndexStoreSvr.exe
C:\WINDOWS\system32\svchost.exe
F:\Program Files\Rockstar Games\Rockstar Games Social Club\1_1_3_0\RGSC.exe
C:\Program Files\Windows Live\Messenger\usnsvc.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Program Files\Trend Micro\HijackThis\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.co.uk
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://go.microsoft....k/?LinkId=69157
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://go.microsoft....k/?LinkId=54896
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://go.microsoft....k/?LinkId=69157
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = *.local
O2 - BHO: Adobe PDF Reader Link Helper - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelper.dll
O2 - BHO: Java™ Plug-In SSV Helper - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre6\bin\ssv.dll
O2 - BHO: (no name) - {7E853D72-626A-48EC-A868-BA8D5E23E045} - (no file)
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: Google Toolbar Notifier BHO - {AF69DE43-7D58-4638-B6FA-CE66B5AD205D} - C:\Program Files\Google\GoogleToolbarNotifier\4.1.805.4472\swg.dll
O2 - BHO: Java™ Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Program Files\Java\jre6\bin\jp2ssv.dll
O2 - BHO: JQSIEStartDetectorImpl - {E7E6F031-17CE-4C07-BC86-EABFE594F69C} - C:\Program Files\Java\jre6\lib\deploy\jqs\ie\jqs_plugin.dll
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [P17Helper] Rundll32 P17.dll,P17Helper
O4 - HKLM\..\Run: [UpdReg] C:\WINDOWS\UpdReg.EXE
O4 - HKLM\..\Run: [cctray] "C:\Program Files\CA\CA Internet Security Suite\cctray\cctray.exe"
O4 - HKLM\..\Run: [QOELOADER] "C:\Program Files\CA\CA Internet Security Suite\CA Anti-Spam\QSP-6.0.1.28\QOELoader.exe"
O4 - HKLM\..\Run: [Logitech Hardware Abstraction Layer] KHALMNPR.EXE
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre6\bin\jusched.exe"
O4 - HKLM\..\Run: [CTSysVol] C:\Program Files\Creative\SBAudigy\Surround Mixer\CTSysVol.exe /r
O4 - HKLM\..\Run: [HP Software Update] C:\Program Files\HP\HP Software Update\HPWuSchd2.exe
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\QTTask.exe" -atboottime
O4 - HKLM\..\Run: [PWRISOVM.EXE] C:\Program Files\PowerISO\PWRISOVM.EXE
O4 - HKLM\..\Run: [PD0620 STISvc] RunDLL32.exe P0620Pin.dll,RunDLL32EP 513
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Program Files\Adobe\Reader 8.0\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [NBKeyScan] "C:\Program Files\Nero\Nero8\Nero BackItUp\NBKeyScan.exe"
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [NeroFilterCheck] C:\Program Files\Common Files\Ahead\Lib\NeroCheck.exe
O4 - HKLM\..\Run: [Ad-watch] "C:\Ad-aware 6\Ad-watch.exe"
O4 - HKLM\..\Run: [COMODO Firewall Pro] "C:\Program Files\COMODO\Firewall\cfp.exe" -h
O4 - HKLM\..\Run: [COMODO Internet Security] "C:\Program Files\COMODO\Firewall\cfp.exe" -h
O4 - HKLM\..\Run: [NvMediaCenter] RUNDLL32.EXE C:\WINDOWS\system32\NvMcTray.dll,NvTaskbarInit
O4 - HKLM\..\RunOnce: [Malwarebytes' Anti-Malware] C:\Program Files\Malwarebytes' Anti-Malware\mbamgui.exe /install /silent
O4 - HKCU\..\Run: [Update Manager] "C:\Program Files\Rogers\Update Manager\UpdateManager.exe" /background
O4 - HKCU\..\Run: [MsnMsgr] "C:\Program Files\Windows Live\Messenger\MsnMsgr.Exe" /background
O4 - HKCU\..\Run: [MsgCenterExe] "C:\Program Files\Common Files\Real\Update_OB\RealOneMessageCenter.exe" -osboot
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [BgMonitor_{79662E04-7C6C-4d9f-84C7-88D8A56B10AA}] "C:\Program Files\Common Files\Ahead\Lib\NMBgMonitor.exe"
O4 - HKCU\..\Run: [Creative WebCam Tray] "C:\Program Files\Creative\Shared Files\CamTray.exe"
O4 - HKCU\..\Run: [RGSC] F:\Program Files\Rockstar Games\Rockstar Games Social Club\RGSCLauncher.exe /silent
O4 - Global Startup: HP Digital Imaging Monitor.lnk = C:\Program Files\HP\Digital Imaging\bin\hpqtra08.exe
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office12\EXCEL.EXE/3000
O9 - Extra button: Send to OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\PROGRA~1\MICROS~2\Office12\ONBttnIE.dll
O9 - Extra 'Tools' menuitem: S&end to OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\PROGRA~1\MICROS~2\Office12\ONBttnIE.dll
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\Office12\REFIEBAR.DLL
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
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
O16 - DPF: {203C12EA-EF5A-4989-BD68-5844A877A9AF} (prjOCFTools.OCFTools) - http://ocf.rogershel...prjOCFTools.CAB
O16 - DPF: {5C051655-FCD5-4969-9182-770EA5AA5565} (Solitaire Showdown Class) - http://messenger.zon...wn.cab56986.cab
O16 - DPF: {67A5F8DC-1A4B-4D66-9F24-A704AD929EEE} (System Requirements Lab) - http://www.systemreq.../sysreqlab2.cab
O16 - DPF: {C3F79A2B-B9B4-4A66-B012-3EE46475B072} (MessengerStatsClient Class) - http://messenger.zon...nt.cab56907.cab
O16 - DPF: {F6ACF75C-C32C-447B-9BEF-46B766368D29} (Creative Software AutoUpdate Support Package) - http://www.creative....15035/CTPID.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{959E2A02-3E94-46E9-96A5-7BFB62848387}: NameServer = 64.71.255.198
O20 - AppInit_DLLs: C:\WINDOWS\system32\guard32.dll
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - ALWIL Software - C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: avast! Antivirus - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashServ.exe
O23 - Service: avast! Mail Scanner - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
O23 - Service: avast! Web Scanner - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
O23 - Service: Bonjour Service - Apple Inc. - C:\Program Files\Bonjour\mDNSResponder.exe
O23 - Service: CaCCProvSP - CA, Inc. - C:\Program Files\CA\CA Internet Security Suite\ccprovsp.exe
O23 - Service: COMODO Internet Security Helper Service (cmdAgent) - Unknown owner - C:\Program Files\COMODO\Firewall\cmdagent.exe
O23 - Service: Google Updater Service (gusvc) - Google - C:\Program Files\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Common Files\InstallShield\Driver\1050\Intel 32\IDriverT.exe
O23 - Service: CA Pest Patrol Realtime Protection Service (ITMRTSVC) - CA, Inc. - C:\Program Files\CA\SharedComponents\PPRT\bin\ITMRTSVC.exe
O23 - Service: Java Quick Starter (JavaQuickStarterService) - Sun Microsystems, Inc. - C:\Program Files\Java\jre6\bin\jqs.exe
O23 - Service: NBService - Nero AG - C:\Program Files\Nero\Nero 7\Nero BackItUp\NBService.exe
O23 - Service: NMIndexingService - Nero AG - C:\Program Files\Common Files\Ahead\Lib\NMIndexingService.exe
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\system32\nvsvc32.exe
O23 - Service: PnkBstrA - Unknown owner - C:\WINDOWS\system32\PnkBstrA.exe
O23 - Service: PPCtlPriv - CA, Inc. - C:\Program Files\CA\CA Internet Security Suite\CA Anti-Spyware\PPCtlPriv.exe

--
End of file - 10290 bytes

Thanks in advance.