Some additional data. Changing the theme from "ubuntu" to "standard" in gconf (/apps /notification-daemon/theme) has no effect. So it seems to be not theme releated.
The crash is actually a Gtk-Crtitical warning that causes the daemon to fail. I did a upload to disable this for now to avoid too many duplicates of this report. It happens when the widget gets destroyed, I currnetly suspect a double free problem somewhere in the daemon. ** Bug 56338 has been marked a duplicate of this bug -- n-d crashes when I click on it after receiving in xchat-gnome https://launchpad.net/bugs/56382 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs