Comment 24 for bug 45656

There's another possible patch in notification-daemon-0.3.4/debian/patches/01_ubuntu_theme.diff: leave the

+#define WIDTH 300

line untouched, and replace the line #487 with the following content:

+ gtk_widget_set_size_request(((body != NULL && *body == '\0') ? windata->body_label : windata->summary_label),

After some experiments, I can confirm that this patch works well with both update-notifier & "low disk space" bubbles, and moreover, does the rhythmbox's box renders better (the first patch do the bubble too much wide, IMO).