WiFi passwords and keychain [Eduroam]

nm-applet (from network-manager-gnome_0.9.8.8-0ubuntu4.3) uses the connection UUID instead of the user-visible connection ID to identify the WiFi connection password in secret storage (keychain). Some utilities or NetworkManager seem to modify the UUID in some situations -- I've not managed to track down exactly when --, so that nm-applet can no longer obtain the connection password from the keyring, causing nm-applet to always pop up a connection password dialog. (Also, previous connection passwords tend to aggregate in the keyring, as they're not automatically removed.)

The particular situation I can semi-reliably reproduce this is with Eduroam connection scripts. (In fact, many scripts fall back to storing the password in cleartext in /etc/NetworkManager/system-connections/, the directory and files being read-only by root.)

My suggestion/fix is to use the user-visible connection ID to identify the WiFi connection in secret storage/keychain. That way the password in the keychain is attached to the NetworkManager connection, as long as the connection ID stays unchanged.

I've submitted this enhancement request upstream as
    https://bugzilla.gnome.org/show_bug.cgi?id=736724
and attached here the simple patch against network-manager-gnome_0.9.8.8-0ubuntu4.3.