Applications are only supposed to install icons into /usr/share/icons/hicolor, the other directories are reserved for specific themes. So the icons currently in /usr/share/icons/gnome should either be in /usr/share/icons/hicolor, or be removed.
See:
http://standards.freedesktop.org/icon-theme-spec/icon-theme-spec-latest.html
Applications are only supposed to install icons into /usr/share/ icons/hicolor, icons/gnome should either be in /usr/share/ icons/hicolor, or be
the other directories are reserved for specific themes. So the icons currently
in /usr/share/
removed.
See:
http:// standards. freedesktop. org/icon- theme-spec/ icon-theme- spec-latest. html