Just put a glass box on a reflecting plane. 1 light from the left top.
the shadow element now seems to includes the reflections. if you make the plane nonreflective the shadow element renders the correct shadows.
All materials are A&D MR
3ds max 9 32 bit productivity pack installed
3ds max 9 64 bit productivity pack installed
win xp 64 sp2 - 4gb of ram
If the box is not transparent it also renders fine on a reflective plane. but as soon as reflection and refraction come together it renders wrong shadow element !