What is the exact procedure that gnome-vfs2 (as in nautilus) uses to determine the mime-type? Apparently the mime types in /usr/share/mime-info (and in ~.gnome/mime-info) are no longer used. I noticed this, when I tried to create a mime type "application/mathematica" with extension "nb" for Mathematica notebooks. This shows up in gnome-file-types-properties, but other otherwise is completely ignored and gnomevfs-info file://$PWD/measure.nb simply shows: Name : measure.nb Type : Regular MIME type : text/plain So, is it true, that a user can assign an application to a mime type that already exists, but not create new ones? -- Gérard Milmeister Tannenrauchstrasse 35 8038 Zürich gemi@xxxxxxxxxx