C:\WINDOWS\system32\PnkBstrA.exe - odkud se ti spouští?
O23 - Service: PnkBstrA - Unknown owner - C:\WINDOWS\system32\PnkBstrA.exe ... zabij ve starteru - záložka sevices, nebo v services.msc

tyto zbytečnosti si taky zruš:
O23 - Service: Nero BackItUp Scheduler 3 - Nero AG - C:\Program Files\Nero\Nero8\Nero BackItUp\NBService.exe
O23 - Service: NMIndexingService - Nero AG - C:\Program Files\Common Files\Nero\Lib\NMIndexingService.exe

asi bych ještě zkoumal co má být toto za odpad:
O9 - Extra button: Skype - {77BF5300-1474-4EC7-9980-D32B190E9B07} - C:\Program Files\Skype\Toolbars\Internet Explorer\SkypeIEPlugin.dll
O9 - Extra button: Zdroje informací - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
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: {17492023-C23A-453E-A040-C7C580BBF700} (Windows Genuine Advantage Validation Tool) - http://go.microsoft.com/fwlink/?linkid=39204
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://www.update.microsoft.com/windowsupdate/v6/V5 Controls/en/x86/client/wuweb_site.cab?120342403975 0
O16 - DPF: {67A5F8DC-1A4B-4D66-9F24-A704AD929EEE} (System Requirements Lab) - http://www.systemrequirementslab.com/sysreqlab2.cab
O16 - DPF: {6E32070A-766D-4EE6-879C-DC1FA91D2FC3} (MUWebControl Class) - http://www.update.microsoft.com/microsoftupdate/v6/ V5Controls/en/x86/client/muweb_site.cab?1203767919 4 06
O17 - HKLM\System\CCS\Services\Tcpip\..\{5D82C141-4D0C-4 AEA-B4BB-64E258AE7A0C}: NameServer = 85.255.115.6,85.255.112.108
O18 - Protocol: brx - {9C160F90-74D1-11D3-AB60-0060977C1F29} - C:\Program Files\Common Files\BricsCad\BrxProtIE.dll