I had the same problem, after installing the gnome3 packages from the gnome3 ppa (ppa:gnome3-team/gnome3).
I fixed it by running: gsettings set com.canonical.Unity.Panel systray-whitelist "['JavaEmbeddedFrame', 'Mumble', 'Wine', 'Skype', 'hp-systray', 'scp- dbus-service', 'NetworkManager']" -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/747918 Title: nm-applet rejected from unity notification area -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs