I'm back. Well, some new evidence now points to Unity or Compiz. My daughter used the Gnome desktop and the problem never showed up. Once she came back with Unity, the mouse failed again, as usual.
Greetings -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1041711 Title: Mouse not clicking in Ubuntu 12.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1041711/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs