It has been brought to our attention that NAV's Geomap has recently gone blank.
Apparently, this is because OpenStreetMap has pulled their support for the Osmarender layer, which is one of the two OSM layers initialized and used by Geomap (the other being Mapnik).
A post [1] on the OSM-dev list explains what has happened.
As a response, we've removed the Osmarender layer from Geomap; this will be effective from the NAV 3.11.1 release, but if you wish to patch your current NAV installation to enable Geomap again, the patch is available at [2].
[1] http://lists.openstreetmap.org/pipermail/dev/2012-February/024301.html [2] http://metanav.uninett.no/hg/default/rev/516efd5456a4