http://eigenclass.org/rubychallenge2007

Your mission, should you choose to accept it, is to find the secret message
hidden in a Ruby script, follow the instructions to generate the code that
will prove you've found the message, and report it via eigenclass.org (more
details at the above address).

This script works with Ruby 1.8.5 (also tested with -p12); alternative
versions for Ruby 1.8.2, 1.8.3 and 1.8.4 are also available.
If you want to try to crack the script, it's safer to download it from
http://eigenclass.org/rubychallenge2007 (cut&paste fails too often...)

One request: please don't publish your hints/solutions --- let's try to keep
the challenge interesting for future readers. Thank you.

The script must be saved as happy2007-eigenclass.org-1.8.5.rb (exactly) and
run with Ruby 1.8.5, without RubyGems:  
  $ RUBYOPT="" ruby happy2007-eigenclass.org-1.8.5.rb

I hope you have fun.

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-- Mauricio Fernandez - http://eigenclass.org - singular Ruby