Node.js Hello world script not working-Collection of common programming errors

I just grabbed that code from an online tutorial:

var http = require('http');
http.createServer(function (req, res) {
  res.writeHead(200, {'Content-Type': 'text/plain'});
  res.end('Hello World\n');
}).listen(3000, 'my.ip.is.here');
console.log('Server running at http://my.ip.is.here:3000/');

When i start:

node app.js

I get the following error:

events.js:48 throw arguments1; // Unhandled ‘error’ event ^ Error: accept ENOSYS at errnoException (net.js:614:11) at TCP.onconnection (net.js:788:24)

I am on a ubuntu 11.10 server VPS, i have nginx as web server but it s not started.

Am i doing something wrong ?