libkrb5support0 1.8.3+dfsg-5ubuntu2 (i386 binary) in ubuntu natty

 Kerberos is a system for authenticating users and services on a network.
 Kerberos is a trusted third-party service. That means that there is a
 third party (the Kerberos server) that is trusted by all the entities on
 the network (users and services, usually called "principals").
 .
 This is the MIT reference implementation of Kerberos V5.
 .
 This package contains an internal runtime support library used by other
 Kerberos libraries.