This seems like a bug, you should probably file a bug report.
But to answer your question, you could do this graphically (using gconf-editor
) but the font settings are spread all over in the gconf database, so the fastest way is to use the command line utility gconftool
to change these settings:
Application font:
gconftool --set /desktop/gnome/interface/font_name --type=string "Lucida Grande 12"
Document font:
gconftool --set /desktop/gnome/interface/document_font_name --type=string "Lucida Grande 12"
Desktop font:
gconftool --set /apps/nautilus/preferences/desktop_font --type=string "Lucida Grande 12"
Window title font:
gconftool --set /apps/metacity/general/titlebar_font --type=string "Lucida Grande 12"
Fixed width font:
gconftool --set /desktop/gnome/interface/monospace_font_name --type=string "Lucida Console 12"