title: Phonegap installation issue (shasum check failed)
body: <p>I'm trying to install phonegap on Ubuntu 13.04 (Raring Ringtail). It runs fine for a whole lot of packages and then all of a sudden stops... Here is the output of the last couple of lines...</p>
  
  <pre><code>npm http GET https://registry.npmjs.org/async/-/async-0.1.22.tgz
  npm http 200 https://registry.npmjs.org/async/-/async-0.1.22.tgz
  npm http GET https://registry.npmjs.org/graceful-fs
  npm http 200 https://registry.npmjs.org/graceful-fs
  npm http GET https://registry.npmjs.org/graceful-fs/-/graceful-fs-2.0.1.tgz
  npm http 200 https://registry.npmjs.org/graceful-fs/-/graceful-fs-2.0.1.tgz
  npm ERR! Error: shasum check failed for /home/thomas/tmp/npm-28537-
      2GGcJK29/1380571519720-0.5711500460747629/tmp.tgz
  npm ERR! Expected: 4bf7f005fe1038c4fe9207603b961c97bd0ba5a3
  npm ERR! Actual:   b237f063a8d2d81a648e08b7173f9b1e040cc77f
  npm ERR!     at /usr/local/lib/node_modules/npm/node_modules/sha/index.js:38:8
  npm ERR!     at ReadStream.&lt;anonymous&gt; 
      (/usr/local/lib/node_modules/npm/node_modules/sha/index.js:85:7)
  npm ERR!     at ReadStream.EventEmitter.emit (events.js:125:20)
  npm ERR!     at _stream_readable.js:896:16
  npm ERR!     at process._tickCallback (node.js:316:11)
  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 3.8.0-31-generic
  npm ERR! command "/usr/local/bin/node" "/usr/local/bin/npm" "install" "-g" "phonegap"
  npm ERR! cwd /home/thomas/node
  npm ERR! node -v v0.11.8-pre
  npm ERR! npm -v 1.3.11
  npm ERR! 
  npm ERR! Additional logging details can be found in:
  npm ERR!     /home/thomas/node/npm-debug.log
  npm ERR! not ok code 0
  </code></pre>
  
  <p>What is this checksum it's looking for? Why is it supposed to be what it says and why would it be different? Google hasn't been able to provide me with a solid answer here.</p>
  
  <p>I have no idea what I can do to fix this - any ideas? Thanks!</p>