title: Why do I get "conflicting chdir during another chdir block" when updating Rubygems on Mountain Lion?
body: <p>Is there any way to revert back to the version of RubyGems that comes with Mountain Lion?
  The reason I ask is that with every gem I install I receive the following warnings:</p>
  
  <pre><code>/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rdoc/rdoc.rb:280: warning: conflicting chdir during another chdir block
  /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rdoc/rdoc.rb:287: warning: conflicting chdir during another chdir block
  </code></pre>
  
  <p>It doesn't seem like this causes any problems and I can always skip installing the docs. But, and call me a perfectionist, I hate receiving them. So can I either revert/downgrade to the original system Rubygems or can I get some direction on how to fix the warnings.</p>