The gnome-pim spec doesn't include the /usr/share/pixmaps/gnome-gnomecard.png file. This is a fairly old bug, btw, I just never got around to reporting it since I keep switching to Ximian. 8^)
BTW, there's one other png not included, but since you don't package the conduits, it doesn't matter.
We (Red Hat) should really try to resolve this before next release.
I put in /usr/share/pixmaps/*