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diff --git a/netx/net/sourceforge/jnlp/security/SecurityDialogMessageHandler.java b/netx/net/sourceforge/jnlp/security/SecurityDialogMessageHandler.java
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+/* SecurityDialogMessageHandler.java
+   Copyright (C) 2010 Red Hat, Inc.
+
+This file is part of IcedTea.
+
+IcedTea is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License as published by
+the Free Software Foundation, version 2.
+
+IcedTea is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with IcedTea; see the file COPYING.  If not, write to
+the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version.
+*/
+
+package net.sourceforge.jnlp.security;
+
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.util.concurrent.BlockingQueue;
+import java.util.concurrent.LinkedBlockingQueue;
+
+import sun.awt.AppContext;
+
+import net.sourceforge.jnlp.runtime.JNLPRuntime;
+
+/**
+ * Handles {@link SecurityDialogMessage}s and shows appropriate security
+ * dialogs.
+ * <p>
+ * In the current architecture, {@link SecurityWarningDialog}s are shown from a
+ * different {@link AppContext} than the {@link AppContext} that asks for a
+ * security prompt. This ensures that all security prompts are isolated and
+ * their Look and Feel is not affected by the Look and Feel of the
+ * applet/application.
+ * <p>
+ * This class contains allows a client application to post a
+ * {@link SecurityDialogMessage}. When this class finds a security message in
+ * the queue, it shows a security warning to the user, and sets
+ * {@link SecurityDialogMessage#userResponse} to the appropriate value.
+ */
+public final class SecurityDialogMessageHandler implements Runnable {
+
+    /** the queue of incoming messages to show security dialogs */
+    private BlockingQueue<SecurityDialogMessage> queue = new LinkedBlockingQueue<SecurityDialogMessage>();
+
+    /**
+     * Runs the message handler loop. This waits for incoming security messages
+     * and shows a security dialog.
+     */
+    @Override
+    public void run() {
+        if (JNLPRuntime.isDebug()) {
+            System.out.println("Starting security dialog thread");
+        }
+        while (true) {
+            try {
+                SecurityDialogMessage msg = queue.take();
+                handleMessage(msg);
+            } catch (InterruptedException e) {
+            }
+        }
+    }
+
+    /**
+     * Handles a single {@link SecurityDialogMessage} by showing a
+     * {@link SecurityWarningDialog}.
+     * <p>
+     * Once the user has made a choice the
+     * {@link SecurityDialogMessage#toDispose} (if not null) is disposed and
+     * {@link SecurityDialogMessage#lock} (in not null) is released.
+     *
+     * @param message the message indicating what type of security dialog to
+     * show
+     */
+    private void handleMessage(SecurityDialogMessage message) {
+        final SecurityDialogMessage msg = message;
+
+        final SecurityWarningDialog dialog = new SecurityWarningDialog(message.dialogType,
+                message.accessType, message.file, message.certVerifier, message.certificate, message.extras);
+
+        dialog.addActionListener(new ActionListener() {
+
+            @Override
+            public void actionPerformed(ActionEvent e) {
+                msg.userResponse = dialog.getValue();
+                /* Allow the client to continue on the other side */
+                if (msg.toDispose != null) {
+                    msg.toDispose.dispose();
+                }
+                if (msg.lock != null) {
+                    msg.lock.release();
+                }
+            }
+        });
+        dialog.setVisible(true);
+
+    }
+
+    /**
+     * Post a message to the security event queue. This message will be picked
+     * up by the security thread and used to show the appropriate security
+     * dialog.
+     * <p>
+     * Once the user has made a choice the
+     * {@link SecurityDialogMessage#toDispose} (if not null) is disposed and
+     * {@link SecurityDialogMessage#lock} (in not null) is released.
+     *
+     * @param message indicates the type of security dialog to show
+     */
+    public void postMessage(SecurityDialogMessage message) {
+        try {
+            queue.put(message);
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        }
+    }
+
+}