[ubuntu] NetworkManager isn't behaving properly in normal user, but works well in root user.

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http://ubuntuforums.org – Hi, everyone. I'm using ubuntu 12.04, but I have replaced Unity with Mate(a fork of gnome2) by unistalling and installing lots of softwares. Everything seems fine, except the Network-Manager applet on the top panel. It just displays: Code: NetworkManager is not running. OK, I run the code in terminal: Code: sudo service network-manager start , then I get the message: Code: start: Job is already running: network-manager. Then I tried to restart: Code: sudo service network-manager restart. All right, something seems changed, Code: network-manager stop/waiting (Hardware)