FULL PRODUCT VERSION :
java version "1.6.0_21"
Java(TM) SE Runtime Environment (build 1.6.0_21-b06)
Java HotSpot(TM) Server VM (build 17.0-b16, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Linux dev02.terracotta.lan 2.6.9-78.0.13.ELsmp #1 SMP Wed Jan 7 17:45:52 EST 2009 x86_64 x86_64 x86_64 GNU/Linux

EXTRA RELEVANT SYSTEM CONFIGURATION :
see attachment (strace.txt)


A DESCRIPTION OF THE PROBLEM :
If I use JDK 6u21 32 bit, the user.home, user.name values are "?"

If I use the 64 bit version, it works correctly.

Also, I can only reproduce this behavior if I use a network account. Everything works fine with a local account, even with 32bit JDK

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
[hhuynh@dev02:~]$ /shares/terra/jdk/linux/hotspot1.6.0_21/bin/java -cp /shares/terra/tmp ShowSystemProps | grep "user"

user.country=US
user.dir=/home/hhuynh
user.home=?
user.timezone=
user.name=?
user.language=en

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Works fine  with 6u21 64 bit on the same machine

[hhuynh@dev02:~]$ /shares/terra/jdk/linux/hotspot1.6.0_21_x64/bin/java -cp /shares/terra/tmp ShowSystemProps | grep "user"
user.country=US
user.dir=/home/hhuynh
user.home=/export2/homes/hhuynh
user.timezone=
user.name=hhuynh
user.language=en
ACTUAL -
[hhuynh@dev02:~]$ /shares/terra/jdk/linux/hotspot1.6.0_21/bin/java -cp /shares/terra/tmp ShowSystemProps | grep "user"
user.country=US
user.dir=/home/hhuynh
user.home=?
user.timezone=
user.name=?
user.language=en

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
ShowSystemProps.java

import java.util.*;

public class ShowSystemProps {

    public static void main(String[] args) {
      Properties props = System.getProperties();
      props.list(System.out);
    }
}
---------- END SOURCE ----------