[release-notes] noting kerberos improvements, as described on feature page.

[Pete Travis]

commit 287f344f989d5b979058e928f035f9f649f389c6
Author: Pete Travis <immanetize at fedoraproject.org>
Date:   Sun May 12 16:21:28 2013 -0600

    noting kerberos improvements, as described on feature page.

 en-US/Security.xml |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)
---
diff --git a/en-US/Security.xml b/en-US/Security.xml
index 1048037..cad6843 100644
--- a/en-US/Security.xml
+++ b/en-US/Security.xml
@@ -45,6 +45,15 @@
   </section>
   -->
 
+  <section>
+    <title>More resilient Kerberos</title>
+    <para>
+      <application>Kerberos</application> in Fedora &PRODVER; has been improved. It is now possible to authenticate using <application>kerberos</application> regardless of the local system time being in sync with that of the <application>kerberos</application> server.
+    </para>
+    <para>
+      Various <application>kerberos</application> bugs have been fixed, including handling of reverse DNS records, have been fixed in order to make a more seamless <application>kerberos</application> experience.
+    </para>
+  </section>
 </section>