Comment 1 for bug 773896

Thank you for your bug report, evolution should open a dialog for meeting reminders, not only a notification, that was enabled by default on natty see https://launchpad.net/ubuntu/+source/evolution/2.32.1-0ubuntu3

" * debian/evolution.gconf-defaults: Disable systray for alarms, as Unity
    doesn't have a systray. Use popup windows instead."