Due to GVFS replacing GNOME-VFS in the GNOME desktop environment, in Ubuntu 8.04 my preferred way of installing fonts doesn’t work anymore. In GNOME versions prior to 2.22 you could navigate to fonts:// in the file browser and drag and drop to install fonts. Doing this in Ubuntu 8.04 gives the error:
Nautilus cannot handle fonts: locations
You can still drag and drop to install fonts using a different folder: .fonts in your home folder.
This folder may not exist by default. Open your home folder in the file browser, and select View->Show Hidden Files. If you can’t find the .fonts folder, create it.