Comment 5 for bug 1083759

Further to note #4 above. Having made the change in note #4 the /usr/share/applications/defaults.list file still gets reset to nautilus after a reboot. I searched for any other occurrences of the defaults.list file and found one in /usr/share/gnome/applications and one in /usr/share/linuxmint/common/artwork/mime. I changed both of these and the /usr/share/applications/defaults.list file remained changed to nemo after a reboot and selection of items in the places menu launched nemo and not nautilus.