This is incredibly trivial, but the description of the nscd package says: Note that you can't use nscd with 2.0 kernels because of bugs in the kernel-side thread support. Unfortunately, nscd happens to hit these bugs particularly hard. I doubt anyone is planning on running a version of Fedora with a 2.0 kernel. Like, ever. :)
http://sources.redhat.com/cgi-bin/cvsweb.cgi/libc/fedora/Attic/glibc.spec.in.diff?r1=1.1.2.152&r2=1.1.2.153&cvsroot=glibc
Thanks. :)