A) There is no help/de in the snapshots thus
B) it seems to be not falling back to C-locale if current locale doesn't
exist.
C) Is the menu entry known to be --suffix safe? It seems to install
correctly though:
$ dpkg -L ekiga-cvs|grep help/
/usr/share/gnome/help/ekiga-snapshot
/usr/share/gnome/help/ekiga-snapshot/C
/usr/share/gnome/help/ekiga-snapshot/C/ekiga-snapshot.xml
/usr/share/gnome/help/ekiga-snapshot/es
/usr/share/gnome/help/ekiga-snapshot/es/ekiga-snapshot.xml
/usr/share/gnome/help/ekiga-snapshot/fr
/usr/share/gnome/help/ekiga-snapshot/fr/ekiga-snapshot.xml
/usr/share/gnome/help/ekiga-snapshot/uk
/usr/share/gnome/help/ekiga-snapshot/uk/ekiga-snapshot.xml