Comment 11 for bug 321442

I can confirm that this bug is not related to permissions issues. I am having the same problem on my system. When I attempt to make a connection available to all users, it disappears from the connection editor, and then a file with the connection name appears in /etc/NetworkManager/system-connections. That connection never appears in the connection editor again, and I can't activate it in the Gnome network manager applet. This happens whether the connection I create is wired or wireless.

My /etc/NetworkManager/system-connections looks like this:

-rw------- 1 root root 550 2009-07-26 20:25 Auto Burton
-rw------- 1 root root 298 2009-07-26 20:42 Auto eth0
-rw------- 1 root root 284 2009-07-26 20:27 Auto eth1
-rw------- 1 root root 297 2009-07-26 20:45 Auto eth2
-rw------- 1 root root 303 2009-07-26 21:22 Foobar
-rw------- 1 root root 307 2009-07-26 21:22 Foobar2
-rw------- 1 root root 324 2009-07-26 20:46 Wired connection 1

As you can see here, I created connections called Foobar, Foobar2, and Wired connection 1. These all disappeared when I attempted to make them available to all users.

In addition, when I attempted to edit an existing connection, Auto eth0, and reconfigure to use a zeroconf local network, it disappeared from the connection editor as well, and I couldn't enable the connection. I still can't figure out how to get Auto eth0 back. (Wired connection 1 was the result of my initial attempt to recreate a wired connection for the interface eth0. After this, I confirmed the problem by creating connections called Foobar and Foobar2.)