http://www.redhat.com/archives/fedora-maintainers/2007-January/msg00339.html nmh is being built without $RPM_OPT_FLAGS (no optimization, no compiler security features, useless debuginfo). Fix attached.
Created attachment 147285 [details] Use $RPM_OPT_FLAGS
This fix has been added in nmh-1_2-20070115cvs_3_fc7