I have the same problem.
I have about 130 machines in my network and this problem appears when i upgrade my windows 2000 prof. system to windows xp prof. SP2.
I saw my configuration in \"Local security settings\" and it is correct, in
Classic mode.
However, i can not modify this option...
![](http://es.geocities.com/mgamberog/003.JPG)
This computer is in domain, but the user is administrator of the domain, and in this computer.
Any other idea?
Thank you very much.
Juan Moreno.