I'm having the same problem with my Brother MFC-8440.
I remember I used an old old guide for Warty or Breezy on how to network my printer. Then something went wrong, I removed the printer in gnome-cups-manager and added it back. Now this is happening. Maybe the configuration file needs to be refreshed?
I'm going to purge and reinstall cups and see how it goes.
I'm having the same problem with my Brother MFC-8440.
I remember I used an old old guide for Warty or Breezy on how to network my printer. Then something went wrong, I removed the printer in gnome-cups-manager and added it back. Now this is happening. Maybe the configuration file needs to be refreshed?
I'm going to purge and reinstall cups and see how it goes.