title: Upgrading Symfony2 and SonataAdminBundle (Mar 01, 2013) after last update
body: <p>After last update SonataAdminBundle (Mar 01, 2013) I can not update components using composer</p>
  
  <p>composer.json </p>
  
  <pre><code>...
  "require": {
          "php": "&gt;=5.3.3",
          "symfony/symfony": "2.1.*",
          "doctrine/orm": "&gt;=2.2.3,&lt;2.4-dev",
          "doctrine/doctrine-bundle": "1.1.*",
          "twig/extensions": "1.0.*@dev",
          "symfony/assetic-bundle": "2.1.*",
          "symfony/swiftmailer-bundle": "2.1.*",
          "symfony/monolog-bundle": "2.1.*",
          "sensio/distribution-bundle": "2.1.*",
          "sensio/framework-extra-bundle": "2.1.*",
          "sensio/generator-bundle": "2.1.*",
          "jms/security-extra-bundle": "1.2.*",
          "jms/di-extra-bundle": "1.1.*",
          "kriswallsmith/assetic": "1.1.*@dev",
  
  ...
  
          "sonata-project/admin-bundle": "dev-master",
          "sonata-project/intl-bundle": "dev-master",
          "sonata-project/doctrine-orm-admin-bundle": "dev-master",
          "sonata-project/cache-bundle": "dev-master"
      },
  ...
  </code></pre>
  
  <p>php composer.phar update symfony/symfony</p>
  
  <pre><code>  Problem 1
      - Installation request for sonata-project/admin-bundle dev-master -&gt; satisfiable by sonata-project/admin-bundle dev-master.
      - Can only install one of: sonata-project/admin-bundle dev-master, sonata-project/admin-bundle 2.1.x-dev.
      - Installation request for sonata-project/admin-bundle == 2.1.9999999.9999999-dev -&gt; satisfiable by sonata-project/admin-bundle 2.1.x-dev.
  </code></pre>