Problems with locale,please help me...

Hi guys,
i'm trying to solve this problem but nothing!!!!
I've a jsf application with 2 languages,italian(default )and english.
I have an italian resource bundle and an english one.
When i run the application and i select in a page english versione,all
the pages became in english,but application message like validator msg
etc....are still in italian!!
In my bean i've
Locale
locale=getFacesContext().getExternalContext().getRequestLocale();
System.out.println(locale);
ResourceBundle rb =
ResourceBundle.getBundle("microarray.bundle.messageResource", locale);
String result = rb.getString("groupPresent");
System.out.println(result);[/code

when i'm in english mode and i click on a submit botton i see
it
the message in italian,

because the locale it retrieves is ITALIAN, so the message is in
italian.
But i'm in english mode!!!!!!!
This is my faces config.xml
[code]<application>
  <message-bundle>microarray.bundle.messageResource</message-bundle>
  <locale-config>
   <default-locale>it</default-locale>
   <supported-locale>it</supported-locale>
   <supported-locale>en</supported-locale>
  </locale-config>
 </application>

and this is my method to populate dropdown list of locales...please
help me...

public List getSupportedtLocaleItems()
      {
        if (localeItems == null)
        {
          localeItems = new ArrayList();
          Application app =
FacesContext.getCurrentInstance().getApplication();
          for (Iterator i = app.getSupportedLocales(); i.hasNext(); )
          {
            Locale locale = (Locale)i.next();
            SelectItem item = new SelectItem(locale.toString(),
locale.getDisplayName());
            localeItems.add(item);
          }
          if (localeItems.size() == 0)
          {
            Locale defaultLocale = app.getDefaultLocale();
            localeItems.add(new SelectItem(defaultLocale.toString(),
defaultLocale.getDisplayName()));
          }
        }
        return localeItems;
      }
    public String getLocale()
      {
        return
FacesContext.getCurrentInstance().getViewRoot().getLocale().toString();
      }

      public void setLocale(String locale)
      {
        FacesContext.getCurrentInstance().getViewRoot().setLocale(new
Locale(locale));
      }