Ruby on Rails

I have installed rvm-ruby-rails (all latest versions) and it works fine as long as I'm in that terminal service window. 
Once i close it and open new terminal window; all of them disappear/ installed things are lost!!.
  If i install them again, in that window they work fine.  It's very varied. Any comments/help appreciated. 

I'm using Ubuntu Linux 11.04. 

Regards,
Ram

--
You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group.
To post to this group, send email to rubyonrails-talk@googlegroups.com.
To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe@googlegroups.com.
For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.