network manager applet disappeared after upgrade

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http://askubuntu.com – After last upgrade of 12.04 my network manager applet disappeared. When I try to start it from terminal I am getting the message: stasevych@stasevych-laptop:~$ nm-applet ** Message: applet now removed from the notification area nm-applet: symbol lookup error: nm-applet: undefined symbol: nm_secret_agent_get_registered stasevych@stasevych-laptop:~$ While bluetooth applet is well working, as well as nmcli works well from console. Updated: I changed /etc/NetworkManager/NetworkManager.conf, and at the moment it looks like: [main] plugins=ifupdown,keyfile dns=dnsmasq [ifupdown] managed=true (HowTos)