I have found many advices howto downgrade Ruby 1.8.7 to 1.8.6 as recommended by Rails core team. You can found the article http://railsgeek.com/2008/11/27/ubuntu-8-10-downgrade-ruby-1-8-7-to-1-8-6
I have found many advices howto downgrade Ruby 1.8.7 to 1.8.6 as recommended by Rails core team. railsgeek. com/2008/ 11/27/ubuntu- 8-10-downgrade- ruby-1- 8-7-to- 1-8-6
You can found the article
http://