Postgresql Adapter not identifying binary column

(from http://pastie.org/353214)

Association => Association(id: integer, server_url: , handle: string, secret: , issued: integer, lifetime: integer, assoc_type: string)

notice the "server_url" and "secret" column does not know its type. (they are both bytea/binary columns)

(ruby 1.8.7) Loading development environment (Rails 2.2.2)

ActiveRecord::Base.connection.class => ActiveRecord::ConnectionAdapters::PostgreSQLAdapter

ActiveRecord::Base.connection.columns("open_id_associations") => [#<ActiveRecord::ConnectionAdapters::Column:0xb6d40d30

Notice the class is a Column instead of a PostgreSQLColumn. when i try to save an Assocation model, postgresql throws an encoding error. Since the column type is not identified, AR is not escaping the data for that column.