Hi!, Paddy Landau,

Thanks for the tip, I had never tried 'gksudo', all the advice I had seen said use 'gksu'.

You are right, 'gksudo nautilus' gives only a slight delay, but 7 screens of Gtk-WARNING messages when the window is closed.

But 'gksudo nautilus /boot/grub' [for instance] gives no delay and no warning messages, only:
Code:
:~$ gksudo nautilus /boot/grub
Initializing nautilus-gdu extension # Window opens: When closed:
Shutting down nautilus-gdu extension
:~$
Chao!, bogan.