Cannot override logout after 20 mins of inactivity
I have a couple of iMacs that have the option to "logout after 20 mins of activity" ticked in security preferences.
I don't want this to happen, so as an administrator I can uncheck the option and click the padlock icon to prevent changes.
However, even with the option unchecked, they'll still log out after 20 mins, and when I revisit the security preferences page again, the option will be ticked again.
Any clues, anyone?
Mac OS X (10.5.8), iMac 4Gb, Black MacBook 2Gb, AEBS, plethora of iPods & iPhones...