Dcom error

[jumpy]

Event Type: Error
Event Source: DCOM
Event Category: None
Event ID: 10016
Date: 04/02/2010
Time: 12:35:46
User: NT AUTHORITY\LOCAL SERVICE
Computer: **********
Description:
The machine-default permission settings do not grant Local Activation permission for the COM Server application with CLSID
{BIG NUMBER}
to the user NT AUTHORITY\LOCAL SERVICE SID (nother number with dashes).

What the hell does this mean?
It's a pretty frequent error, approx a dozen times an hour.

Windows help says the following:

Explanation A program, the Clsid displayed in the message, tried to start the DCOM server by using the DCOM infrastructure. Based on the security ID (SID), this user does not have the necessary permissions to start the DCOM server.
User Action Verify that the user has the appropriate permissions to start the DCOM server.
To assign permissions

1. Using Regedit, navigate to the following registry value
   HKCR\Clsid\clsid value\localserver32
   The clsid value is the information displayed in the message.
2. In the right pane, double-click Default. The Edit String dialog box is displayed. Leave this dialog box open.
3. Click Start, and then click Control Panel.
4. Double-click Administrative Tools, and then double-click Component Services.
5. In the Component Services snap-in, expand Computers, expand My Computer, and double-click DCOM Config.
6. In the right pane, locate the program by using its friendly name.
7. Right-click the program name, and then select Properties.
8. On the Security tab, in the Launch and Activation Permissions group box, select Customize, and then click Edit.

Add the user to the permissions list, and give the user the appropriate permissions.

I've searched the reg entry and got as far as looking for the program by its friendly name... that's where it goes wrong.
In the reg editor I've found the string localserver32 default name and data: looks like it's an nvidia process - C:\PROGRA~1\NVIDIA~1\NETWOR~1\bin\NSVCAP~1.EXE probably this: nSvcAppFlt.exe (a network access manager/filter) But I can't seem to find the exe in the DCOM Config in order to modify its security properties (maybe I shouldn't do this anyway?)

Any of you tech guys have any idea?

Ta.

EDIT:
More searching internet - looks like its the nvidia firewall (nvidia forceware network access manager) - I had no idea that I was using it... or when it was installed lol. Add & remove programs says it was last used on 02/10/2006!

EDIT: relates to the hardware firewall on certain ASUS mobos... like mine apparently.