thin & redmine?

[www@el-abid rails_app]$ thin start -e production --socket /tmp/redmine.socket
>> Using rails adapter
Missing the Rails 2.3.11 gem. Please `gem install -v=2.3.11 rails`, update your RAILS_GEM_VERSION setting in config/environment.rb for the Rails version you do have installed, or comment out RAILS_GEM_VERSION to use the latest version installed.

[www@el-abid rails_app]$ rails -v
Rails 2.3.11

[www@el-abid rails_app]$ ruby script/server thin -e production --socket /tmp/redmine.socket
server: invalid option: --socket
=> Booting Thin
=> Rails 2.3.11 application starting on http://0.0.0.0:3000
=> Call with -d to detach
=> Ctrl-C to shutdown server
>> Thin web server (v1.2.11 codename Bat-Shit Crazy)
>> Maximum connections set to 1024
>> Listening on 0.0.0.0:3000, CTRL+C to stop


[www@el-abid rails_app]$ gem list

*** LOCAL GEMS ***

actionmailer (2.3.11)
actionpack (2.3.11)
activerecord (2.3.11)
activeresource (2.3.11)
activesupport (2.3.11)
daemon_controller (0.2.6)
daemons (1.1.3)
eventmachine (0.12.10)
fastthread (1.0.7)
i18n (0.4.2)
inifile (0.4.1)
lockfile (1.4.3)
mysql (2.8.1)
net-ssh (2.1.4)
passenger (3.0.7)
rack (1.2.2, 1.1.2)
rails (2.3.11)
rake (0.8.7)
thin (1.2.11)