Comment 36 for bug 23293

there is some intelligent thinking in nautilus 2.30 for this

comment on the upstream patch that was pushed
"""
This patch checks if a window is displaying or has displayed (in history) the
root folder of the mount using g_file_equal in addition to the existing
g_file_has_prefix checks. Note that this change along with the *existing* code
only closes windows who have navigated solely around the mount. If you have
navigated anywhere else in the window it won't be closed."""