postgresql-contrib 9.1+121 (i386 binary) in ubuntu oneiric

 The PostgreSQL contrib package provides several additional features
 for the PostgreSQL database. contrib often serves as a testbed for
 features before they are adopted into PostgreSQL proper.
 .
 This package always depends on the currently supported contrib
 package for PostgreSQL.
 .
 PostgreSQL is an object-relational SQL database management system.
 This package always depends on the currently supported PostgreSQL
 database documentation package.
 .
 This metapackage always depends on the currently supported PostgreSQL
 database contrib package.