A recent yum update in rawhide broke my VPN access. Here is the error from the log: NetworkManager[1034]: <error> [1342806413.569960] [nm-vpn-connection.c:1405] get_secrets_cb(): Failed to request VPN secrets #3: (6) No agents were available for this request.
Are you running GNOME Shell? If so, I believe this is due to GNOME Shell and dbus-glib issues. Make sure you're running dbus-glib 0.100 or later and latest gnome-shell packages. If not using the Shell, then it's something else. This message means that the thing that provides secrets to NM is no longer running. That thing is usually GNOME Shell, nm-applet, or KDE network management. If none of those things are running, then nothing is available to ask you for your VPN password.
dbus-glib-0.100-1.fc18.x86_64 gnome-shell-3.5.4-3.fc18.x86_64
network-manager-applet-0.9.5.95-2.git20120713.fc18.x86_64
Nathaniel, do you see any crash of NM, gnome-shell, nm-applet? Would you attach /var/log/messages and ~/.xsession-errors?
This appears to have gone away. I'm wondering if I was actually running a mismatch of versions or something. Anyway, fixed for now.
It's been fixed by updating dbus-glib. *** This bug has been marked as a duplicate of bug 817851 ***