Why updating of dependencies in composer is so slow?

Question

I am using composer (http://getcomposer.org/) to manage installed bundles in the Symfony2 (symfony v 2.1.3). Version of the composer is de3188c.

Answer 1

Since you accepted an answer, it looks like that solved your problem. Just in case anybody else stumbles across this question though (like I did when I was searching), in my case, a really slow Composer install had to do with my PHP version (word of warning, I am a complete and utter Composer newbie), even though Composer ran through its standard checks and said everything was fine. I run Ubuntu 12.04 LTS and was too lazy to upgrade from the default PHP 5.3.10 (the same version you're running) in the Precise repo.

Installing Twig via Composer originally took me around 30 minutes. I gave up installing Doctrine after it took more than an hour. I upgraded to 5.4.17 (using this PPA https://launchpad.net/~ondrej/+archive/php5) and installing Doctrine was done in a matter of seconds.