Unable to manage mobile account settings
This is something you'll have to change in Workgroup Manager on your home server (assuming you're using Mac OS X Server). 

What you'll need to do is: 


Open Workgroup Manager from /Applications/Server
Authenticate as a server administrator
Find your user account and go to the Preferences tab
Go to Mobility
Change all the managed preferences from Once or Always to Never:




Log out and log back in on your client computer and you should be good to go!