I'm almost certain this is a side-effect of nm-applet running long enough and leaking enough memory to be in a bad state when you try to click these items.
Are you still able to reproduce the issue? I think this was likely be have been fixed in a recent upload of nm-applet; and if not is possibly an issue at a different level (libdbusmenu?) ** Changed in: network-manager-applet (Ubuntu) Status: New => Incomplete ** Changed in: network-manager-applet (Ubuntu) Importance: Undecided => Low -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/930563 Title: NM Applet menu entries not responding To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager-applet/+bug/930563/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs