RPC server is unavailable

Any idea how to resolve the following error:

Event Type: Error
Event Source: Userenv
Event Category: None
Event ID: 1053
Date: 2/15/2006
Time: 7:22:19 AM
User: NT AUTHORITY\SYSTEM
Computer: myServer
Description:
Windows cannot determine the user or computer name. (The RPC server is unavailable. ). Group Policy processing aborted.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.



Event Type: Warning
Event Source: EventSystem
Event Category: (54)
Event ID: 4353
Date: 2/14/2006
Time: 10:17:44 AM
User: N/A
Computer: myServer
Description:
The COM+ Event System attempted to fire the EventObjectChange::ChangedSubscription event but received a bad return code. HRESULT was 80040201.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.


Thanks!

I ran the netdiag tool and in the attachment is the result. I also have sygate firewall turned on and windows SCW.

my netbt.sys file was infected and antivirus deleted it. then just transferred a clean file from another sp3 system and worked fine after restart.

you might also want to try to slipstream a xp sp3 disk and then use the "SFC /scannow" command to fix missing system files.
it might even work if you edit the default sp3 file locations in the registry and unpack sp3.exe with 7zip, but you prolly need a sp3 disk anyway... plus you can customize it, so you dont have to click the hell out of yourself after every clean install...