Comment 106 for bug 325973

As noted on the GNOME bugzilla report:

https://bugzilla.gnome.org/show_bug.cgi?id=571417#c31

If you want show_desktop off then set exit_with_last_window to false. Disabling the auto-restart will mean you lose volume automounting and anything else handled by nautilus, by turning off show_desktop.

I would suggest that a better fix for this bug would be to make exit_with_last_window default to false.