I have been running out of my admin account for a long time, but have since decided to run from a standard account. I have created a new admin account and from there changed my original account to standard. The problem for me has been that now my original account has the "Allow user to administer this computer" option both turned on AND greyed out. It allowed me to uncheck it once, then turned grey and remains turned on. I have rebooted and logged into the new admin account and attempted to change the old account to standard, it's still set to admin and greyed out. Restarted again and logged into root, same problem. Original account still admin and admin option greyed out so I can't disable admin for that account. This is all done after unlocking the preference panel, so that doesn't seem to be the issue. Any suggestions how to proceed?
I have been posting in the thread "New Mac User Accounts-Need dedicated Admin account?"
http://discussions.apple.com/thread.jspa?threadID=1717400
No luck so far, so I'm opening this up to more folks