title: MongoError: connection 0 to localhost:27017 timed out
body: <pre><code>events.js:141
        throw er; // Unhandled 'error' event
  MongoError: connection 0 to localhost:27017 timed out
  at Function.MongoError.create (/home/ubuntu/scripts/node_modules/mongodb-core/lib/error.js:29:11)
      at Socket.&lt;anonymous&gt; (/home/ubuntu/scripts/node_modules/mongodb-core/lib/connection/connection.js:184:20)
      at Socket.g (events.js:260:16)
      at emitNone (events.js:67:13)
      at Socket.emit (events.js:166:7)
      at Socket._onTimeout (net.js:318:8)
      at _runOnTimeout (timers.js:524:11)
      at _makeTimerTimeout (timers.js:515:3)
      at Timer.unrefTimeout (timers.js:584:5)
  </code></pre>
  
  <p>Well there is no error during connection, but when try to save some models/collections it runs for a while and then it throws this error.
  BTW I also have another node process connected to the same mongodb server. Any help is highly appreciated. </p>