Did you just install nm-applet? Usually you have to go into the System > Administration > Networking and disable the devices by clicking on them and hitting properties, then uncheck the "enable this connection" box. Log out then Log back in and it should detect them/take over controlling them.
** Changed in: network-manager (Ubuntu) Assignee: (unassigned) => Chris Burgan Status: Unconfirmed => Needs Info -- NetworkManager applet doesn't understand device with two ip addresses https://launchpad.net/bugs/86745 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs