Hi all, im trying to launch the metasploit web console and im getting some errors.

Code:
/usr/lib/ruby/1.8/webrick/utils.rb:63:in `getaddrinfo': getaddrinfo: Name or service not known (SocketError)
        from /usr/lib/ruby/1.8/webrick/utils.rb:63:in `create_listeners'
        from /usr/lib/ruby/1.8/webrick/server.rb:75:in `listen'
        from /usr/lib/ruby/1.8/webrick/server.rb:63:in `initialize'
        from /usr/lib/ruby/1.8/webrick/httpserver.rb:24:in `initialize'
        from /var/lib/gems/1.8/gems/rails-1.2.2/lib/webrick_server.rb:58:in `new'
        from /var/lib/gems/1.8/gems/rails-1.2.2/lib/webrick_server.rb:58:in `dispatch'
        from /var/lib/gems/1.8/gems/rails-1.2.2/lib/commands/servers/webrick.rb:59
        from /usr/lib/ruby/1.8/rubygems/custom_require.rb:27:in `gem_original_require'
         ... 6 levels...
        from /usr/lib/ruby/1.8/rubygems/custom_require.rb:27:in `require'
        from ./script/server:3
        from ./msfweb:82:in `load'
        from ./msfweb:82
Those are the errors im getting. Does anyone know what the problem could be with this? And how can i solve it. Im just trying to launch the web version of metasploit. Thanx in advance!