title: "sudo npm install -g grunt-cli" gives me an error
body: <p>I get an error when trying to install gruntjs on a linux 12.04 (with a mirrored packages source)</p>
  
  <p>Here is the error:</p>
  
  <pre><code> sudo npm install -g grunt-cli
  
  npm ERR! Error: ENOENT, open '/home/havetl/.npm/d63f3d0b-grunt-cli.lock'
  npm ERR! If you need help, you may report this log at:
  npm ERR!     &lt;http://github.com/isaacs/npm/issues&gt;
  npm ERR! or email it to:
  npm ERR!     &lt;npm-@googlegroups.com&gt;
  
  npm ERR! System Linux 3.5.0-23-generic
  npm ERR! command "/usr/bin/node" "/usr/bin/npm" "install" "-g" "grunt-cli"
  npm ERR! cwd /home/havetl
  npm ERR! node -v v0.10.18
  npm ERR! npm -v 1.3.8
  npm ERR! path /home/havetl/.npm/d63f3d0b-grunt-cli.lock
  npm ERR! code ENOENT
  npm ERR! errno 34
  npm ERR! Error: EACCES, open 'npm-debug.log'
  npm ERR!  { [Error: EACCES, open 'npm-debug.log'] errno: 3, code: 'EACCES', path: 'npm-debug.log' }
  npm ERR!
  npm ERR! Please try running this command again as root/Administrator.
  
  npm ERR! System Linux 3.5.0-23-generic
  npm ERR! command "/usr/bin/node" "/usr/bin/npm" "install" "-g" "grunt-cli"
  npm ERR! cwd /home/havetl
  npm ERR! node -v v0.10.18
  npm ERR! npm -v 1.3.8
  npm ERR! path npm-debug.log
  npm ERR! code EACCES
  npm ERR! errno 3
  npm ERR! stack Error: EACCES, open 'npm-debug.log'
  npm ERR!
  npm ERR! Additional logging details can be found in:
  npm ERR!     /home/havetl/npm-debug.log
  npm ERR! not ok code 0
  </code></pre>
  
  <p>Thanks for any idea!</p>