Dave,
Here is the version of Ruby along with other Gems installed
ruby 1.8.6 (2007-03-13 patchlevel 0) [x86_64-linux]
*** LOCAL GEMS ***
abstract (1.0.0)
   a library which enable you to define abstract method in Ruby
actionmailer (1.3.6, 1.3.5)
   Service layer for easy email delivery and testing.
actionpack (1.13.6, 1.13.5)
   Web-flow and rendering framework putting the VC in MVC.
actionwebservice (1.2.6, 1.2.5)
   Web service support for Action Pack.
activerecord (1.15.6)
   Implements the ActiveRecord pattern for ORM.
activesupport (2.0.2, 1.4.4)
   Support and utility classes used by the Rails framework.
ap4r (0.3.5)
   Asynchr
onous Processing for Ruby.
archive-tar-minitar (0.5.1)
   Provides POSIX tarchive management from Ruby programs.
builder (2.1.2)
   Builders for MarkUp.
cached_model (1.3.1)
   An ActiveRecord abstract model that caches records in memcached
capistrano (2.1.0)
   Capistrano is a utility and framework for executing commands in
   parallel on multiple remote machines, via SSH.
cgi_multipart_eof_fix (2.5.0, 2.3)
   Fix an exploitable bug in CGI multipart parsing.
color (1.4.0)
   Colour management with Ruby
color-tools (1.3.0)
   color-tools provides colour space definition and manpiulation as
   well as commonly named RGB colours.
daemo
ns (1.0.9)
   A toolkit to create and control daemons in different ways
documatic (0.1.0)
   Documatic is an OpenDocument extension for Ruby Reports (Ruport). It
   is a template-driven formatter that can be used to produce
   attractive printable documents such as database reports, invoices,
   letters, faxes and more.
erubis (2.4.1)
   a fast and extensible eRuby implementation which supports
   multi-language
ezcrypto (0.7)
   Simplified encryption library.
fastercsv (1.2.3, 1.2.1)
   FasterCSV is CSV, but faster, smaller, and cleaner.
fastthread (1.0.1)
   Optimized replacement for thread.rb primitives
gem_plugin (0.2
.3)
   A plugin system based on rubygems that uses dependencies only
gruff (0.2.8)
   Beautiful graphs for one or multiple datasets.
highline (1.4.0)
   HighLine is a high-level command-line IO library.
hoe (1.5.0, 1.3.0)
   Hoe is a simple rake/rubygems helper for project Rakefiles
hpricot (0.6)
   a swift, liberal HTML parser with a fantastic library
localization_generator (1.0.8)
   [Rails] Localization generator.
log4r (1.0.5)
   Log4r is a comprehensive and flexible logging library for Ruby.
mailfactory (1.2.3)
   MailFactory is a pure-ruby MIME mail generator
memcache-client (1.5.0)
   A Ruby memcached client
merb (0
.4.1)
   Merb == Mongrel + Erb. Pocket rocket web framework.
mime-types (1.15)
   Manages a MIME Content-Type that will return the Content-Type for a
   given filename.
mongrel (1.1.1)
   A small fast HTTP library and server that runs Rails, Camping, Nitro
   and Iowa apps.
mongrel_cluster (1.0.5)
   Mongrel plugin that provides commands and Capistrano tasks for
   managing multiple Mongrel processes.
needle (1.3.0)
   Needle is a Dependency Injection/Inversion of Control container for
   Ruby. It supports both type-2 (setter) and type-3 (constructor)
   injection. It takes advantage of the dynamic nature of Ruby 20to
   provide a rich and flexible approach to injecting dependencies.
net-sftp (1.1.0)
   Net::SFTP is a pure-Ruby implementation of the SFTP client protocol.
net-ssh (1.1.2)
   Net::SSH is a pure-Ruby implementation of the SSH2 client protocol.
pdf-writer (1.1.7)
   A pure Ruby PDF document creation library.
rails (1.2.6)
   Web-application framework with template engine, control-flow layer,
   and ORM.
rails_analyzer_tools (1.4.0)
   Tools for analyzing the performance of web sites.
railsmachine (1.0.0)
   The Rails Machine task library
rake (0.8.1, 0.7.3)
   Ruby based make-like utility.
RedCloth (3.0.4)
   RedCl
oth is a module for using Textile and Markdown in Ruby. Textile
   and Markdown are text formats. A very simple text format. Another
   stab at making readable text that can be converted to HTML.
reliable-msg (1.1.0)
   Reliable messaging and persistent queues for building asynchronous
   applications in Ruby
rmagick (2.2.2)
   Ruby binding to ImageMagick
rubigen (1.2.3, 1.1.1)
   A framework to allow Ruby applications to generate file/folder stubs
   (like the rails command does for Ruby on Rails, and the
   âscript/generateâ command within a Rails application during
   development).
ruby-debug (0.10.0)
  C2 Command line interface (CLI) for ruby-debug-base
ruby-debug-base (0.10.0, 0.9.3)
   Fast Ruby debugger - core component
ruby-debug-ide (0.1.9)
   IDE interface for ruby-debug.
rubyforge (0.4.4)
   A script which automates a limited set of rubyforge operations.
rubyzip (0.9.1)
   rubyzip is a ruby module for reading and writing zip files
ruport (1.4.0)
   A generalized Ruby report generation and templating engine.
ruport-util (0.8.0)
   A set of tools and helper libs for Ruby Reports
salted_login_generator (1.1.1)
   [Rails] Login generator with salted passwords.
scruffy (0.2.2)
   A powerful, clean graphing library for Ruby.
sources
(0.0.1)
   This package provides download sources for remote gem installation
sql_dep_graph (1.0.0)
   Graphs table dependencies based on usage from SQL logs
SyslogLogger (1.4.0)
   SyslogLogger is a Logger replacement that logs to syslog. It is
   almost drop-in with a few caveats.
tlsmail (0.0.1)
   This library enables pop or smtp via ssl/tls by dynamically
   replacing these classes to these in ruby 1.9.
transaction-simple (1.4.0)
   Simple object transaction support for Ruby.
uuid (1.0.4)
   UUID generator
ZenTest (3.9.1, 3.6.1)
   ZenTest provides 4 different tools and 1 library: zentest,
   unit_diff
, autotest, multiruby, and Test::Rails
regards
Mohammed