Events 1053 & 4356 on Terminal Server

[manxra]

Hi,

I am getting a lot of events 1053 & 4356 (Below) on a Terminal Server.
These seem to be random, not necessarily while users are logged on the terminal.

Any Ideas?

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Event Type: Error
Event Source: Userenv
Event Category: None
Event ID: 1053
Date: 3/16/2005
Time: 9:31:29 PM
User: NT AUTHORITY\SYSTEM
Computer: TERMINAL
Description:
Windows cannot determine the user or computer name. (The system detected a
possible attempt to compromise security. Please ensure that you can contact
the server that authenticated you. ). Group Policy processing aborted.
-------------------------------------------------------------------------------------
Event Type: Warning
Event Source: EventSystem
Event Category: (52)
Event ID: 4356
Date: 3/16/2005
Time: 9:15:39 PM
User: N/A
Computer: TERMINAL
Description:
The COM+ Event System failed to create an instance of the subscriber
{C2F23AE4-82D8-456F-A4AF-A2655D8CA726}. StandardCreateInstance returned
HRESULT 8000401A.

-------------------------------------------------------------------------------------

Thanks

Nich