FULL PRODUCT VERSION :
1.5.0_07

ADDITIONAL OS VERSION INFORMATION :
Linux kernel 2.6.12 Debian Box.

EXTRA RELEVANT SYSTEM CONFIGURATION :
KDE 3.5

A DESCRIPTION OF THE PROBLEM :
The Bug consists in capture the VK_UP or VK_DOWN on keyReleased inside addKeyListner... the Bug is very simple to reproduce...

The VK_UP event , must occurs if the user release the holded key... in Windows... this work perfect... in linux... the event is called line by line of JTable...

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Press the DOWN button and HOLD THEM...

the event must called ONLY AFTER YOU RELEASE THE DOWN BUTTON.... , but in linux...the event is called line by line...

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The event only call on release the UP buytton... but this event is called line by line on JTable (if in linux , in windows work perfect! )
ACTUAL -
Line by line the event is called...

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
/*
 * NewJFrame.java
 *
 * Created on 3 de Agosto de 2006, 15:55
 */

package swingtest;

import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import javax.swing.JOptionPane;

/**
 *
 * @author root
 */
public class NewJFrame extends javax.swing.JFrame {
    
    /** Creates new form NewJFrame */
    public NewJFrame() {
        initComponents();
        
         jTable1.addKeyListener(new KeyAdapter() {
            public void keyReleased(KeyEvent e) {
                if (e.getKeyCode() == KeyEvent.VK_UP) {
                    JOptionPane.showMessageDialog(NewJFrame.this,"up !");
                }else
                if (e.getKeyCode() == KeyEvent.VK_DOWN) {
                    JOptionPane.showMessageDialog(NewJFrame.this,"Down !");
                }
            }
        });

    }
    
    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    // <editor-fold defaultstate="collapsed" desc=" Generated Code ">
    private void initComponents() {
        jScrollPane1 = new javax.swing.JScrollPane();
        jTable1 = new javax.swing.JTable();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        jTable1.setModel(new javax.swing.table.DefaultTableModel(
            new Object [][] {
                {null, null, null, null},
                {null, null, null, null},
                {null, null, null, null},
                {null, null, null, null}
            },
            new String [] {
                "Title 1", "Title 2", "Title 3", "Title 4"
            }
        ));
        jScrollPane1.setViewportView(jTable1);
        getContentPane().add(jTable1);

/*
        org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .addContainerGap()
                .add(jScrollPane1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 375, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(13, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .addContainerGap()
                .add(jScrollPane1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 275, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(13, Short.MAX_VALUE))
        );
*/
        pack();
    }// </editor-fold>
    
    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new NewJFrame().setVisible(true);
            }
        });
    }
    
    // Variables declaration - do not modify
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JTable jTable1;
    // End of variables declaration
    
}

---------- END SOURCE ----------