Light on Layer 2 seems to light other objects

I hope I’m understanding correctly that, if you want a light to shine on only certain objects, you place both the objects and the light on the same layer.

when I do so, the light appears to light objects which are not on the same layer as the ones I want it to light up, and even seems to IGNORE the same-layer object.

Am I missing a key part of this procedure?

thanks for any tips. 2.49b on a Mac Pro using Snow Leopard, 10.6.2


Select the light and go to the Shading panel (F5). If you click on the Layer button in the Lamp tab only objects in the light’s layer will be lit by the light.

ah…beautiful…thank you much!