FULL PRODUCT VERSION :
java version "1.5.0_15"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_15-b04)
Java HotSpot(TM) Client VM (build 1.5.0_15-b04, mixed mode, sharing)
1.6.0_06-b02

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows XP [Version 5.1.2600]

A DESCRIPTION OF THE PROBLEM :
When using DateFormat class with DateFormat.SHORT style and en_GB locale (Locale.UK), the expected pattern is dd/MM/yyyy as per the short date format defined here:

http://unicode.org/cldr/data/common/main/en_GB.xml

Actual pattern used by the DateFormat class is: dd/MM/yy


REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;

import junit.framework.TestCase;

public class TestDateFormat extends TestCase {

    public void testDateFormat() {
        Date now = new Date();
        String expected = new SimpleDateFormat("dd/MM/yyyy", Locale.UK).format(now);
        String actual = DateFormat.getDateInstance(DateFormat.SHORT, Locale.UK).format(now);
        
        assertEquals(expected, actual);
    }
    
}
---------- END SOURCE ----------