Active Directory User account not keeping Security list

I have an Active Directory user account in a Windows 2003 domain that does not seem to keep the entries specified in the 'Security' tab for the account.  After about 15-30 minutes the security list keeps reverting back to an old list of entries.  I have even selected the 'Default' button to 'Replace all permissions entries with default settings' but it still reverts back to an old list after a period of time.  Any idea what's going on?  Thanks.
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Mike KlineCommented:
Was that account ever a member of a built-in group such as domain admins or account operators
Full list of those groups here:
That also explains adminsdholder which is what you may be dealing with.   Another good entry on the subject is on the Microsoft DS team blog

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
innotionentAuthor Commented:
Yes, the  account is part of the domain admins group. I removed from that group.  Let's see what happens.
Mike KlineCommented:
because it was part of the group before it will still happen to this account.
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Active Directory

From novice to tech pro — start learning today.