This looks like a duplicate of bug #1011073. ( https://bugs.launchpad.net/ubuntu/+source/network-manager-applet/+bug/1011073)
Restarting nm-applet seems to fix the problem temporarily:
killall nm-applet nm-applet >/dev/null 2>/dev/null &
This looks like a duplicate of bug #1011073. ( https:/ /bugs.launchpad .net/ubuntu/ +source/ network- manager- applet/ +bug/1011073)
Restarting nm-applet seems to fix the problem temporarily:
killall nm-applet
nm-applet >/dev/null 2>/dev/null &