Charles Nutter is asking for help in squashing Rails bugs with JRuby. It seems full support for Ruby on Rails with JRuby is only just over the horizon, with over 90% coverage of ActiveRecord and ActiveSupport so far. Charles provides instructions on how to set up Rails with JRuby and run your own tests.

Once JRuby supports Ruby on Rails 100%, a second deployment option for thousands of Rails applications suddenly becomes available, and with the impressive performance gains and optimizations becoming available in JRuby, significantly faster Web apps could soon result.