thats not a unity bug since you mentioned it happens when changing screen brightness could be gnome-settings-daemon (?)
** No longer affects: unity ** Package changed: unity (Ubuntu) => gnome-settings-daemon (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/863770 Title: The focus from the active window/dialog is lost every few seconds making the desktop totally unusable To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-settings-daemon/+bug/863770/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
