title: Git clone failing on public key. Is there something I'm missing?
body: <p>Due to Bundle install choking on libv8 dependency from theRubyRacer, JSON and other gems on a win 7 I'm trying to install and get running with Ubuntu.  Copied over .gitconfig and .ssh/rsa_id and .ssh/rsa_id.pub files, but trying a git clone of a private repo, works on win7 but fails (with same public key) on linux:</p>
  
  <pre><code>james@ubuntu:/documents/projects/$ sudo git clone git@github.com:the_project/back_end
  [sudo] password for james: 
  Cloning into back_end...
  Permission denied (publickey).
  fatal: The remote end hung up unexpectedly
  </code></pre>
  
  <p>vs win7's:</p>
  
  <pre><code>C:\test&gt;git clone git@github.com:the_project/back_end
  Cloning into back_end...
  Enter passphrase for key '/c/Users/AJames/.shh/id_rsa':
  remote: Counting objects: 10034, done.
  </code></pre>
  
  <p>any ideas?  Thank you!!</p>