RQM/Selenium fails with version xul24.0 not defined in file libxul.so with link time reference

I run RQM 4.0.3 on image4, which is a Linux RedHat 6.2 64bits.

I installed Selenium 2.37.0 on image5, which is a Linux RedHat 6.2 64bits with Firefox 3.6.24

I configured the selenium.properties with the classpath entries, as described in:
http://www.ibm.com/developerworks/rational/library/run-automated-selenium-junit-tests/index.html

The RQM adapter and selenium are using this JVM:

java version "1.7.0"
Java(TM) SE Runtime Environment (build pxa6470sr5-20130619_01(SR5))
IBM J9 VM (build 2.6, JRE 1.7.0 Linux amd64-64 Compressed References 20130617_152572 (JIT enabled, AOT enabled)
J9VM - R26_Java726_SR5_20130617_1436_B152572
JIT  - r11.b04_20130528_38954ifx1
GC   - R26_Java726_SR5_20130617_1436_B152572_CMPRSS
J9CL - 20130617_152572)
JCL - 20130616_01 based on Oracle 7u25-b12


I launch my TestCase and it fails with:

org.openqa.selenium.firefox.NotConnectedException: Unable to connect to host 127.0.0.1 on port 7055 after 45000 ms. Firefox console output:
*** EM_LOG *** Item Installed via directory addition to Install Location: app-global Item ID: {972ce4c6-7e08-4474-a285-3208198ce6fd}, attempting to register...
*** EM_LOG *** Item Installed/Upgraded at Install Location: app-global Item ID: {972ce4c6-7e08-4474-a285-3208198ce6fd}, attempting to register...
*** Blocklist::_loadBlocklistFromFile: blocklist is disabled
*** EM_LOG *** ... success, item is compatible
*** EM_LOG *** Item Installed via directory addition to Install Location: app-profile Item ID: fxdriver@googlecode.com, attempting to register...
*** EM_LOG *** Item Installed/Upgraded at Install Location: app-profile Item ID: fxdriver@googlecode.com, attempting to register...
*** EM_LOG *** ... success, item is compatible
/usr/lib64/firefox-3.6/firefox: relocation error: /tmp/anonymous7909223498175187913webdriver-profile/extensions/fxdriver@googlecode.com/platform/Linux_x86_64-gcc3/components/libwebdriver-firefox-esr-latest.so: symbol _Znwm, version xul24.0 not defined in file libxul.so with link time reference

	at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.start(NewProfileExtensionConnection.java:108)
	at org.openqa.selenium.firefox.FirefoxDriver.startClient(FirefoxDriver.java:250)
	at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:110)
	at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:197)
	at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:190)
	at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:186)
	at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:99)
	at com.ibm.support.library.tests.LibraryTest.setUp(LibraryTest.java:20)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:76)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:607)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)
	at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
	at org.junit.runners.Suite.runChild(Suite.java:127)
	at org.junit.runners.Suite.runChild(Suite.java:26)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:160)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:138)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:117)
	at com.ibm.rqm.adapter.commandline.JUnitLauncher.main(JUnitLauncher.java:116)

Any suggestions?

I forgot, this is the TestScript class:

package com.ibm.support.library.tests;

import java.util.regex.Pattern;
import java.util.concurrent.TimeUnit;
import org.junit.*;
import static org.junit.Assert.*;
import static org.hamcrest.CoreMatchers.*;
import org.openqa.selenium.*;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.support.ui.Select;

public class LibraryTest {
  private WebDriver driver;
  private String baseUrl;
  private boolean acceptNextAlert = true;
  private StringBuffer verificationErrors = new StringBuffer();

  @Before
  public void setUp() throws Exception {
    driver = new FirefoxDriver();
    baseUrl = "http://image5.example.com:9080/";
    driver.manage().timeouts().implicitlyWait(60, TimeUnit.SECONDS);
  }

  @Test
  public void testLibrary() throws Exception {
    driver.get(baseUrl + "/LibraryWeb/");
    driver.findElement(By.id("link1")).click();
    driver.findElement(By.id("link2")).click();
    driver.findElement(By.id("link5")).click();
    driver.findElement(By.id("link3")).click();
    new Select(driver.findElement(By.id("form1:title1"))).selectByVisibleText("La Divina Commedia");
    new Select(driver.findElement(By.id("form1:clientName1"))).selectByVisibleText("Simon Smith");
    driver.findElement(By.id("form1:button1")).click();
    driver.findElement(By.id("link6")).click();
    driver.findElement(By.id("form1:button1")).click();
    driver.findElement(By.id("link4")).click();
  }

  @After
  public void tearDown() throws Exception {
    driver.quit();
    String verificationErrorString = verificationErrors.toString();
    if (!"".equals(verificationErrorString)) {
      fail(verificationErrorString);
    }
  }

  private boolean isElementPresent(By by) {
    try {
      driver.findElement(by);
      return true;
    } catch (NoSuchElementException e) {
      return false;
    }
  }

  private boolean isAlertPresent() {
    try {
      driver.switchTo().alert();
      return true;
    } catch (NoAlertPresentException e) {
      return false;
    }
  }

  private String closeAlertAndGetItsText() {
    try {
      Alert alert = driver.switchTo().alert();
      String alertText = alert.getText();
      if (acceptNextAlert) {
        alert.accept();
      } else {
        alert.dismiss();
      }
      return alertText;
    } finally {
      acceptNextAlert = true;
    }
  }
}