Just did a fresh install to 12.04 from 11.04, using the default Unity desktop. I don't seem to be getting anything from the Messaging indicator applet. I'm running all the default things that I installed this morning: Thunderbird 11.01 with Global Menu Bar Integration 3.2 and Messaging Menu and Unity Integration 0.9.3. In Thunderbird, I go Preferences -> When new message arrives -> Show an alert, Play Sound. But nothing happens. No sound, no bubble notification, no change in color of the Messaging indicator, but Thunderbird clearly shows new messages. I tried installing notification-daemon but that didn't do anything either, even after another restart. Any suggestions?