English error messages in JSF 2.0.3 (not validation)?

I had configured JSF 1.2 successfully to display English error messages that come from the server. Now I was making the transition to JSF 2.0, but the error messages seem to be back to German. Localized error messages are a real pain if you want to google up anything (I have no idea who decided localized error messages to be a good thing BTW!).

Here's the faces-config.xml:

<?xml version="1.0" encoding="UTF-8"?>
<faces-config version="2.0"
              xmlns="http://java.sun.com/xml/ns/javaee"
              xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
              xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-facesconfig_2_0.xsd">

  <application>
    <!-- view handler only for JSF 1.2 -->
    <!--view-handler>com.sun.facelets.FaceletViewHandler</view-handler-->

    <locale-config>
      <default-locale>en</default-locale>
      <supported-locale>en</supported-locale>
      <supported-locale>en_US</supported-locale>
    </locale-config>
  </application>

</faces-config>

I'm using JSF 2.0.3 as shipped with JBAS 6, plus Seam and RichFaces.

Does anyone know how to get error messages in English language? Maybe config from the deployer or JBAS 6 itself?

Edit: the erro开发者_开发技巧r messages appear at server startup as launched from inside Eclipse.

The message comes from your container, not from JSF.

You can change your regional settings or add the JVM parameter -Duser.language=en when you start the container.