Not geeing the reply by mail

I had done a mail to this group regarding my problem but not getting reply by the mail even the guest are replying to post.The post with replies is at

http://www.ruby-forum.com/topic/1371088

Why not receiving the mail for this group?

Thanks

Have you subscribed to the list at
http://groups.google.com/group/rubyonrails-talk?

Colin