Re-opened, re-assigning to xmlrpc-c component. IPA enrollment is failing with xmlrpc-c-1.16.24-1206.1840.2.el5.x86_64 but succeeds with xmlrpc-c-1.16.24-1206.1840.el5_7.4.x86_64 because the ticket is not being delegated. I think it is failing because the BuildRequires isn't setting a minimum to a version of curl-devel that defines HAVE_CURL_GSSAPI_DELEGATION.
Added BuildRequires on curl-devel >= 7.15.5-15
Added Requires on curl >= 7.15.5-15 to xmlrpc-c-client, xmlrpc-c-client++ and xmlrpc-c-apps subpackages.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. http://rhn.redhat.com/errata/RHBA-2012-0179.html