Already fixed in f17 and f18 by http://lists.fedoraproject.org/pipermail/scm-commits/2012-May/781809.html
xinetd-2.3.14-47.fc16 has been submitted as an update for Fedora 16. https://admin.fedoraproject.org/updates/xinetd-2.3.14-47.fc16
xinetd-2.3.14-37.fc15 has been submitted as an update for Fedora 15. https://admin.fedoraproject.org/updates/xinetd-2.3.14-37.fc15
xinetd-2.3.14-47.fc16 has been pushed to the Fedora 16 stable repository. If problems still persist, please make note of it in this bug report.
xinetd-2.3.14-37.fc15 has been pushed to the Fedora 15 stable repository. If problems still persist, please make note of it in this bug report.
All affected versions fixed, closing now.