libclone-perl 0.28-2 (i386 binary) in ubuntu intrepid

 This module provides a clone() method which makes recursive
 copies of nested hash, array, scalar and reference types,
 including tied variables and objects.
 .
 It is faster (although less flexible) than Storable's dclone. Its
 functionality is _not_ serializing in-memory objects (i.e. as
 Data::Dumper or YAML::Dump do), but deep-copying them over to new
 in-memory structures.