What happens if you use gksudo instead of gksu? (Officially, there is no difference between gksu and gksudo, but in fact there is a subtle difference.)
Also, if you use sudo, you should use -H, as: sudo -H nautilus
What happens if you use gksudo instead of gksu? (Officially, there is no difference between gksu and gksudo, but in fact there is a subtle difference.)
Also, if you use sudo, you should use -H, as:
sudo -H nautilus