JCK1.3a, interactive: Robot's mouseMove behaves incorrectly under Windows

JDK : JDK1.3.1_01-ea
JCK : JCK1.3a
Platform[s] : Windows XP, Windows XP + IE 6.0
switch/Mode : -client -Xmixed -Xfuture
JCK test owner : http://javaweb.eng/jck/usr/owners.jto
Failing Test : api/java_awt/interactive/RobotTests.html#RobotTests [RobotTest0003]

This test fails under Windows XP both under plugin and regular JCK run.
The test passes under Windows 2000.

Test source location:
=====================
/net/jdk/export/disk8/local.java/jck1.3a/JCK-runtime-13a/tests/api/java_awt/interactive/RobotTests.java

jtr file location:
==================
file:/net/jtgb4u4c.eng/export/sail15/results/jdk1.3.1_01/2001-09-14/jck13a/win32/winxp_plugin_ie60/workDir/api-interactive/java_awt/interactive/RobotTests_RobotTests.jtr

How to reproduce:
=================
1. Run the following script under Windows XP (probably, you need to change JCK and JAVA_HOME paths)
2. Press "Start test" button
You will see that mouse pointer moves to the wrong locations.

--------Script START---------------------
#!/bin/sh
JAVA_HOME=c:/jdk1.3.1_01ea
JCK=c:/jck1.3a
export CLASSPATH="$JCK/classes:$JCK/javatest.jar"
executeClass="javasoft.sqe.tests.api.java.awt.interactive.RobotTests -TestCaseID RobotTest0003 -platform.robotAvailable true"
$JAVA_HOME/bin/java -Xfuture ${executeClass}
---------Script END----------------------

Test output:
============
RobotTest0003: Failed. mousePress/Release method does NOT work as expected.
result: Failed. tests: 1; passed: 0; failed: 1; first test case failure: RobotTest0003

Specific Machine Info:
=====================
Host name: jck-win2000XP
OS: Windows XP