Index: ide/applemenu/src/org/netbeans/modules/applemenu/FontReferenceQueue.java
===================================================================
RCS file: ide/applemenu/src/org/netbeans/modules/applemenu/FontReferenceQueue.java
diff -N ide/applemenu/src/org/netbeans/modules/applemenu/FontReferenceQueue.java
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ ide/applemenu/src/org/netbeans/modules/applemenu/FontReferenceQueue.java	11 Apr 2005 22:57:23 -0000
@@ -0,0 +1,106 @@
+/*
+ *                 Sun Public License Notice
+ * 
+ * The contents of this file are subject to the Sun Public License
+ * Version 1.0 (the "License"). You may not use this file except in
+ * compliance with the License. A copy of the License is available at
+ * http://www.sun.com/
+ * 
+ * The Original Code is NetBeans. The Initial Developer of the Original
+ * Code is Sun Microsystems, Inc. Portions Copyright 1997-2005 Sun
+ * Microsystems, Inc. All Rights Reserved.
+ */
+
+package org.netbeans.modules.applemenu;
+
+import java.awt.Font;
+import java.lang.ref.Reference;
+import java.lang.ref.ReferenceQueue;
+import java.lang.reflect.Field;
+
+// #57664: Random crash on Mac OS X.  Apple JDK apparently has a bug in 
+// the native part of the font handling code.  Font instances seems to share
+// native data structures which are released when the instances are finalized.
+// Because the native data are shared, their premature release causes random 
+// JVM crashes.
+//
+// This evil hack forces Font.finalize() not to run.  The native font data
+// are leaked but it's still better than total crash
+
+class FontReferenceQueue extends ReferenceQueue {
+    /**
+     * Polls this queue to see if a reference object is available.  If one is
+     * available without further delay then it is removed from the queue and
+     * returned.  Otherwise this method immediately returns <tt>null</tt>.
+     * 
+     * @return  A reference object, if one was immediately available,
+     *          otherwise <code>null</code>
+     */
+    public Reference poll() {
+        Reference ref;
+        
+        for (;;) {
+            ref = super.poll();
+            if (ref == null)
+                break;
+            
+            Object obj = ref.get();
+            if (! (obj instanceof Font))
+                break;
+        }
+        return ref;
+    }
+
+    /**
+     * Removes the next reference object in this queue, blocking until either
+     * one becomes available or the given timeout period expires.
+     * 
+     * <p> This method does not offer real-time guarantees: It schedules the
+     * timeout as if by invoking the {@link Object#wait(long)} method.
+     * 
+     * @param  timeout  If positive, block for up <code>timeout</code>
+     *                  milliseconds while waiting for a reference to be
+     *                  added to this queue.  If zero, block indefinitely.
+     * 
+     * @return  A reference object, if one was available within the specified
+     *          timeout period, otherwise <code>null</code>
+     * 
+     * @throws  IllegalArgumentException
+     *          If the value of the timeout argument is negative
+     * 
+     * @throws  InterruptedException
+     *          If the timeout wait is interrupted
+     */
+    public Reference remove(long timeout) throws IllegalArgumentException, InterruptedException {
+        // timeout is not handled correctly, but good enough for our purposes
+        
+        Reference ref;
+        
+        for (;;) {
+            ref = super.remove(timeout);
+            if (ref == null)
+                break;
+            
+            Object obj = ref.get();
+            if (! (obj instanceof Font))
+                break;
+        }
+        return ref;
+    }
+        
+    static void install() {
+        try {
+            Class clzz = Class.forName("java.lang.ref.Finalizer");  // NOI18N
+            Field fld = clzz.getDeclaredField("queue");  // NOI18N
+            fld.setAccessible(true);
+            fld.set(null, new FontReferenceQueue());
+        } catch (NoClassDefFoundError ex) {
+            // ex.printStackTrace();
+        } catch (ClassNotFoundException ex) {
+            // ex.printStackTrace();
+        } catch (Exception ex) {
+            // ex.printStackTrace();
+        }
+        
+    }
+}
Index: ide/applemenu/src/org/netbeans/modules/applemenu/Install.java
===================================================================
RCS file: /cvs/ide/applemenu/src/org/netbeans/modules/applemenu/Install.java,v
retrieving revision 1.1
diff -u -u -r1.1 Install.java
--- ide/applemenu/src/org/netbeans/modules/applemenu/Install.java	8 Jun 2004 12:46:10 -0000	1.1
+++ ide/applemenu/src/org/netbeans/modules/applemenu/Install.java	11 Apr 2005 22:57:23 -0000
@@ -7,7 +7,7 @@
  * http://www.sun.com/
  * 
  * The Original Code is NetBeans. The Initial Developer of the Original
- * Code is Sun Microsystems, Inc. Portions Copyright 1997-2004 Sun
+ * Code is Sun Microsystems, Inc. Portions Copyright 1997-2005 Sun
  * Microsystems, Inc. All Rights Reserved.
  */
 
@@ -25,6 +25,8 @@
 public class Install extends ModuleInstall {
     public void restored () {
         if (System.getProperty("mrj.version") != null) { // NOI18N
+            FontReferenceQueue.install();
+            
             try {
                 Class adapter = Class.forName("org.netbeans.modules.applemenu.NbApplicationAdapter");
                 Method m = adapter.getDeclaredMethod("install", new Class[0] );