libsefs4 3.3.5.ds-5ubuntu3 (amd64 binary) in ubuntu karmic

 Security-enhanced Linux is a patch of the Linux kernel and a number
 of utilities with enhanced security functionality designed to add
 mandatory access controls to Linux. This is a shared library for
 indexing and analyzing a snapshot of security contexts for SELinux
 file-system entities. Used primarily by setools, but may be of use
 for other packages.