Warning messages after upgraded from rails 1.0 to 1.1

Just upgrade from rails 1.0 to 1.1

Everytime I run the unit and/or functional tests, I got the following
messages. Is there something I need to do to remove? I am not sure where
to start. Thanks in advance.

/usr/lib/ruby/gems/1.8/gems/activerecord-1.14.2/lib/active_record/validations.rb:334:
warning: *' interpreted as argument prefix /usr/lib/ruby/gems/1.8/gems/activerecord-1.14.2/lib/active_record/validations.rb:363: warning:’ interpreted as argument prefix
/usr/lib/ruby/gems/1.8/gems/activerecord-1.14.2/lib/active_record/migration.rb:224:
warning: instance variable @ignore_new_methods not initialized
/usr/lib/ruby/gems/1.8/gems/activerecord-1.14.2/lib/active_record/migration.rb:224:
warning: instance variable @ignore_new_methods not initialized
/usr/lib/ruby/gems/1.8/gems/activerecord-1.14.2/lib/active_record/connection_adapters/abstract/connection_specification.rb:41:
warning: method redefined; discarding old allow_concurrency=
/usr/lib/ruby/gems/1.8/gems/activerecord-1.14.2/lib/active_record/connection_adapters/sqlserver_adapter.rb:456:
warning: method redefined; discarding old remove_column
/usr/lib/ruby/gems/1.8/gems/activerecord-1.14.2/lib/active_record/connection_adapters/oracle_adapter.rb:119:
warning: (…) interpreted as grouped expression
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/request.rb:169:
warning: method redefined; discarding old relative_url_root
/usr/lib/ruby/1.8/cgi/session/pstore.rb:17: warning: method redefined;
discarding old []=
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/cgi_ext/raw_post_data_fix.rb:57:
warning: ambiguous first argument; put parentheses or even spaces
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/cgi_ext/raw_post_data_fix.rb:8:
warning: method redefined; discarding old initialize_query
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/session/active_record_store.rb:129:
warning: private attribute?
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/session/active_record_store.rb:179:
warning: method redefined; discarding old connection
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_view/helpers/prototype_helper.rb:640:
warning: ambiguous first argument; put parentheses or even spaces
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_view/helpers/prototype_helper.rb:873:
warning: `
’ interpreted as argument prefix
/usr/lib/ruby/gems/1.8/gems/actionmailer-1.2.1/lib/action_mailer/vendor/tmail/facade.rb:486:
warning: method redefined; discarding old create_reply
/usr/lib/ruby/gems/1.8/gems/actionwebservice-1.1.2/lib/action_web_service/protocol/xmlrpc_protocol.rb:6:
warning: discarding old message
/usr/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/initializer.rb:581: warning:
method redefined; discarding old []=
/usr/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/initializer.rb:590: warning:
method redefined; discarding old []
/usr/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/initializer.rb:595: warning:
method redefined; discarding old keys
/usr/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/initializer.rb:600: warning:
method redefined; discarding old find_pair
/usr/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/initializer.rb:607: warning:
method redefined; discarding old []=
/usr/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/initializer.rb:611: warning:
method redefined; discarding old []
/usr/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/initializer.rb:615: warning:
method redefined; discarding old method_missing