Comment 11 for bug 36249

Confirmed here (Breezy upgraded from Hoary)

This post http://www.ubuntuforums.org/showpost.php?p=398755&postcount=5 gives a
temporary (current session only) solution:
1- sudo /etc/init.d/dbus restart
2 - gnome-volume-manager &
3 - killall gnome-panel
4 - killall nautilus

After doing this floppy mounts via nautilus.

Of course, it may be useless in general, but may provide some clues.