libpam0g 0.79-3ubuntu1 (amd64 binary) in ubuntu dapper

Pluggable Authentication Modules library
 Contains the C shared library for Linux-PAM, a suite of shared
 libraries that enable the local system administrator to choose how
 applications authenticate users. In other words, without rewriting
 or recompiling a PAM-aware application, it is possible to switch
 between the authentication mechanism(s) it uses. One may entirely
 upgrade the local authentication system without touching the
 applications themselves.