In the browse mode open a folder containing jpeg images. Select "View as
Catalog" mode. Right-click on any image and notice that no popup menu
Also dnd doesn't work from the catalog view.
upstream bug: http://bugzilla.gnome.org/show_bug.cgi?id=156902
The catalog bug is in gthumb, so this is not a nautilus problem.
Adding the support for that stuff to gthumb is a lot of work though,
so its up to the gthumb authors to decide on.