org.freedesktop.NetworkManagerSystemSettings was not provided by any .service files.

[代尔欣 <daierxin gmail com>]

Hi all, 
    I port the NetworkManager(revision 3202) and applet(revision 425) to our embedded device. So far it works fine. From the 
    ftp://ftp.gnome.org/Public/GNOME/sources/NetworkManager/0.7
    I saw the official 0.7 is already released. So I am trying to upgrade our version. I have several questions. Thank help in advance.

1. I download the applet from ftp://ftp.gnome.org/Public/GNOME/sources/network-manager-applet/0.7. Is it the correct version work wit h NetworkManager 0.7.0?

2. After upgrade some packages(dbus1.1.1 dbus-glib0.7.6 etc.). I can compile and install the NetworkManager and nm-applet. When I run the nm-applet, I get below warning:

** (nm-applet:3735): WARNING **: Icon nm-device-wwan missing: Icon 'nm-device-wwan' not present in theme
--It seems the applet search the gnome icon theme but not the icons nm-applet installed. 

** (nm-applet:3735): WARNING **: Could not retrieve dbus connections: The name org.freedesktop.NetworkManagerSystemSettings was not provided by any .service files.
--I checked. It seems /usr/share/dbus-1/system-services/org.freedesktop.NetworkManagerSystemSettings.service already installed. why?

** (nm-applet:3114): WARNING **: couldn't communicate with gnome keyring daemon via dbus: The name org.gnome.keyring was not provided by any .service files
--The gnome-keyring-daemon already run.

3. Related question2 the first warning, nm-connection-editor can't be run. Below warnings:
** (nm-connection-editor:3858): WARNING **: Icon nm-device-wwan missing: Icon 'nm-device-wwan' not present in theme

** (nm-connection-editor:3858): WARNING **: Failed to initialize the UI, exiting...

4. Related question2 the second warning, I run 
/usr/sbin/nm-system-settings --config /etc/NetworkManager/nm-system-settings.conf
manually, I got
** (nm-system-settings:3946): WARNING **: Invalid config file: No such file or directory.
I checked, no conf file in /etc/NetworkManager/ where can find this file? What is it for?

5. NetworkManager0.7.0 work with PolicyKit. Which policykit version should I use? PolicyKit0.6? Now I use PolicyKit0.9, but need replace the function 
polkit_context_can_caller_do_action(deprecated) with polkit_context_is_caller_authorized

Too many questions, hope can help me. Thanks again!