Lutz-Peter Hooge posted this on 11 Sep 2001:
http://news.povray.org/MPG.160834111f191173989688@news.povray.org
"scattering media seems to be always and only illuminated by global
light_sources, even if "global_lights off" is specified."
And it's in beta 9 but not in the bug lists..
Ari-Matti
