[Dell Switcher]

Although I have not added any software (two updates though), I am getting an error message on Network in Systems Preferences "Your network settings have been changed by another application". I click on OK and the message returns and will not allow me to do anything in Systems Preferences. Moreover, I cannot close Network so I have to use Force Quit to stop.

I still have access to the internet.

Any help?

[Cold Warrior]

Are you running any software, such as something from your ISP, that might change your network settings?
Does this persist if you create a new user account?

[charlespsu]

Any firewall installed?

[Spoffo]

I have the exact same problem. It started out of the blue as far as i can tell, and affects both of the accounts on this MacBook Pro. The only thing I can think that might have caused it was I was on the road, staying in a Hilton, and their wireless service had one of those proprietary welcome screens. But, that was perfectly easy to click past and seemed to be strictly a browser thing, not something to do with system/network setup.

I've tried deleting all sorts of prefs files (on both accounts) and I can't get rid of this sticky pop-up message.) What do I have to delete to get a totally clean new network control panel? At this point I'm willing to sacrifice all my saved wireless passwords, etc.

[Simon]

This article seems to address the issue and also offers a solution. Also make sure to check the additional info people left in the comments section.

http://www.macfixit.com/article.php?...80929133440824

[2greythounds]

This article requires a $24.95 subscription to the site. Before resorting to that for this problem, which I am also having, has anyone come up with other solutions?

[Cold Warrior]

Is the application System Preferences still in Applications/Utilities?
Does the problem persist if you create a new user?
Does the problem persist if you create a new network location? (something besides 'automatic')