By default, we can’t delete files in Nautilus 3 with delete key, as we did always, because it’s deactivated.
For enable this on Fedora 15, go to terminal and write this down:
$ gsettings set org.gnome.desktop.interface can-change-accels true
Then go to a nautilus window, click on Edit menu and put the mouse over (don’t press, only hover) ”Delete” and press delete key. You will see the new shortcut at the right.
Once you’ve done it, I recommend to turn it off again:
$ gsettings set org.gnome.desktop.interface can-change-accels false
If you use ubuntu you can use dconf-editor. Press ALT+F2 and write dconf-editor and then follow this path: org > gnome > desktop > interface and check can-change-accels.
Then, do the same as in Fedora, but you may have to hit the key twice.
Don’t forget to uncheck the box for preventing changing other shortcuts.