Rails - Dec 2008 - NoMethodError: undefined method `fformat' - rake aborted!

Hello,

I have installed postgresql 8.3 in linux Mint 6 r1 (ubuntu 8.10) and the
ruby from ubuntu repositories, then "gem install rails -y"

I''ve installed "gem -install postgres-pr -y" and configured
the
database.yml as follows:

database.yml
#########################################
common: &common
  adapter: postgresql
  timeout: 5000
  host: localhost
  username: eric
  password: ************
  enconding: utf8

development:
  database: panthro_devel
  <<: *common

test:
  database: panthro_test
  <<: *common

production:
  database: panthro
  <<: *common

#########################################

Those databases are created in the server, and the auth in my
pg_hba.conf for local connections is setted on "trust" value.

I''ve issued some scaffolding for 2 entities, and tried to migrate them
with "rake db:migrate --trace" and i''ve got the following
error trace:



error trace:
#########################################
(in /home/eric/Proyectos/panthro)
** Invoke db:migrate (first_time)
** Invoke environment (first_time)
** Execute environment
** Execute db:migrate
rake aborted!
NoMethodError: undefined method `fformat'' for
#<PGresult:0xb7afce74>:
SHOW client_min_messages
/home/eric/Proyectos/panthro/vendor/rails/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb:147:in
`log''
/home/eric/Proyectos/panthro/vendor/rails/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb:444:in
`query''
/home/eric/Proyectos/panthro/vendor/rails/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb:605:in
`client_min_messages''
/home/eric/Proyectos/panthro/vendor/rails/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb:245:in
`supports_standard_conforming_strings?''
/home/eric/Proyectos/panthro/vendor/rails/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb:836:in
`connect''
/home/eric/Proyectos/panthro/vendor/rails/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb:185:in
`initialize''
/home/eric/Proyectos/panthro/vendor/rails/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb:37:in
`new''
/home/eric/Proyectos/panthro/vendor/rails/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb:37:in
`postgresql_connection''
/home/eric/Proyectos/panthro/vendor/rails/activerecord/lib/active_record/connection_adapters/abstract/connection_specification.rb:292:in
`send''
/home/eric/Proyectos/panthro/vendor/rails/activerecord/lib/active_record/connection_adapters/abstract/connection_specification.rb:292:in
`connection=''
/home/eric/Proyectos/panthro/vendor/rails/activerecord/lib/active_record/connection_adapters/abstract/connection_specification.rb:260:in
`retrieve_connection''
/home/eric/Proyectos/panthro/vendor/rails/activerecord/lib/active_record/connection_adapters/abstract/connection_specification.rb:78:in
`connection''
/home/eric/Proyectos/panthro/vendor/rails/activerecord/lib/active_record/migration.rb:386:in
`initialize''
/home/eric/Proyectos/panthro/vendor/rails/activerecord/lib/active_record/migration.rb:357:in
`new''
/home/eric/Proyectos/panthro/vendor/rails/activerecord/lib/active_record/migration.rb:357:in
`up''
/home/eric/Proyectos/panthro/vendor/rails/activerecord/lib/active_record/migration.rb:340:in
`migrate''
/home/eric/Proyectos/panthro/vendor/rails/railties/lib/tasks/databases.rake:99
/usr/lib/ruby/1.8/rake.rb:546:in `call''
/usr/lib/ruby/1.8/rake.rb:546:in `execute''
/usr/lib/ruby/1.8/rake.rb:541:in `each''
/usr/lib/ruby/1.8/rake.rb:541:in `execute''
/usr/lib/ruby/1.8/rake.rb:508:in `invoke_with_call_chain''
/usr/lib/ruby/1.8/rake.rb:501:in `synchronize''
/usr/lib/ruby/1.8/rake.rb:501:in `invoke_with_call_chain''
/usr/lib/ruby/1.8/rake.rb:494:in `invoke''
/usr/lib/ruby/1.8/rake.rb:1931:in `invoke_task''
/usr/lib/ruby/1.8/rake.rb:1909:in `top_level''
/usr/lib/ruby/1.8/rake.rb:1909:in `each''
/usr/lib/ruby/1.8/rake.rb:1909:in `top_level''
/usr/lib/ruby/1.8/rake.rb:1948:in `standard_exception_handling''
/usr/lib/ruby/1.8/rake.rb:1903:in `top_level''
/usr/lib/ruby/1.8/rake.rb:1881:in `run''
/usr/lib/ruby/1.8/rake.rb:1948:in `standard_exception_handling''
/usr/lib/ruby/1.8/rake.rb:1878:in `run''
/usr/bin/rake:28
#####################################

I''ve looked into "abstract_adapter.rb" and
"postgresql_adapter.rb" in
those lines just for curiosity to see the problem with a better aproach,
but I''ve got nothing since I''m not just mastering rails...

It would be great if some of you could helpme with this issue. I beg you
sorry about my english! XD

Thank you in advance!
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Sorry, I''ve forgotten to say that I''ve tried to issue manually
those
queries that postgresql_adapter.rb does, and jere are the results, just
in case that could help:

postgresql_adapter.rb (line 251):

      query(''SHOW standard_conforming_strings'')[0][0] =>
''off''

postgresql_adapter.rb (line 605):

      query(''SHOW client_min_messages'')[0][0] =>
''notice''

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