New bones drawn different than old on same armature

Hi all.

Something I’m trying to figure out about armatures.
When I add new bones to this armature, or duplicate existing ones, they are drawn as wire only, no “faces”. What does this mean?
I’m using a cvs build from 2005/10/20.

http://lennon.csufresno.edu/~rwv01/Bone_difference.png