Index: build.xml
===================================================================
--- build.xml	(revision 408)
+++ build.xml	(working copy)
@@ -120,6 +120,7 @@
         <junit printsummary="true" >
         	<sysproperty key="classes.location" value="file://${classes-location-variable}/"/>
         	<sysproperty key="java.io.tmpdir" value="${build.temp}"/>
+        	<sysproperty key="org.jboss.serial.SYNC_SERIALIZATION_BINARY_FORMATS" value="true"/>
             <classpath refid="build.classpath">
             </classpath>
             <batchtest todir="${tests.dir}" fork="yes">
Index: tests/org/jboss/serial/contribtests/jbser121/MyEntity.java
===================================================================
--- tests/org/jboss/serial/contribtests/jbser121/MyEntity.java	(revision 0)
+++ tests/org/jboss/serial/contribtests/jbser121/MyEntity.java	(revision 0)
@@ -0,0 +1,32 @@
+package org.jboss.serial.contribtests.jbser121;
+
+import java.io.File;
+import java.io.IOException;
+
+public class MyEntity {
+	private File file;
+
+	// just to prevent direct instantiation
+	private MyEntity() {
+	}
+	
+	public static MyEntity createInstance() {
+		MyEntity entity = new MyEntity();
+		entity.init();
+		return entity;
+	}
+	
+	// In an EJB, this would be a PostConstruct
+	public void init() {
+		try {
+			this.file = File.createTempFile("jbser121", "txt");
+		} catch (IOException e) {
+			throw new RuntimeException(e);
+		}
+	}
+	
+	// In an EJB, this would be the PreDestroy
+	public void destroy() {
+		this.file.delete();
+	}
+}
Index: tests/org/jboss/serial/contribtests/jbser121/JBSER121TestCase.java
===================================================================
--- tests/org/jboss/serial/contribtests/jbser121/JBSER121TestCase.java	(revision 0)
+++ tests/org/jboss/serial/contribtests/jbser121/JBSER121TestCase.java	(revision 0)
@@ -0,0 +1,35 @@
+package org.jboss.serial.contribtests.jbser121;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+
+import junit.framework.TestCase;
+
+import org.jboss.serial.io.JBossObjectInputStream;
+import org.jboss.serial.io.JBossObjectOutputStream;
+
+public class JBSER121TestCase extends TestCase {
+
+	/**
+	 * This test should pass for all newer JVMs as long as the property  
+	 * org.jboss.serial.SYNC_SERIALIZATION_BINARY_FORMATS is true
+	 * 
+	 * @throws Exception
+	 */
+	public void testSerializationForAllJVMs() throws Exception {
+		ByteArrayOutputStream byteOut = new ByteArrayOutputStream();
+		JBossObjectOutputStream os = new JBossObjectOutputStream(byteOut);
+		os.writeObject(MyEntity.createInstance());
+		os.flush();
+
+		ByteArrayInputStream byteInpt = new ByteArrayInputStream(byteOut.toByteArray());
+		JBossObjectInputStream is = null;
+		try {
+			is = new JBossObjectInputStream(byteInpt);
+			MyEntity ent = (MyEntity) is.readObject();
+		} catch (IOException e) {
+			fail("Failed to revert an object with a java.io.File embedded. This happens if you are using a JVM newer than JDK 1.6.0_19 and you didn't set the property org.jboss.serial.SYNC_SERIALIZATION_BINARY_FORMATS");
+		}
+	}
+}