我有一个Java WebDriver驱动的Selenium执行，它在列表上循环以在文本框中输入其他信息并使用FirefoxDriver发送它。

在第10次或第11次迭代后，在一台非常可重现的计算机上，调用
findElement(By.id("mi4"))会引发一个UnreachableBrowserException。

Jun 29, 2012 1:52:02 PM org.apache.http.impl.client.DefaultRequestDirector tryConnect
Information: I/O exception (java.net.BindException) caught when connecting to the target host: Address already in use: connect
Jun 29, 2012 1:52:02 PM org.apache.http.impl.client.DefaultRequestDirector tryConnect
Information: Retrying connect
Jun 29, 2012 1:52:02 PM org.apache.http.impl.client.DefaultRequestDirector tryConnect
Information: I/O exception (java.net.BindException) caught when connecting to the target host: Address already in use: connect
...
Exception in thread "main" org.openqa.selenium.remote.UnreachableBrowserException: Error communicating with the remote browser. It may have died.
Build info: version: '2.24.1', revision: '17205', time: '2012-06-19 15:28:49'
System info: os.name: 'Windows XP', os.arch: 'x86', os.version: '5.1', java.version: '1.7.0_04'
Driver info: driver.version: RemoteWebDriver
   at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:467)
   at org.openqa.selenium.remote.RemoteWebDriver.findElement(RemoteWebDriver.java:242)
Caused by: java.net.BindException: Address already in use: connect
   at java.net.TwoStacksPlainSocketImpl.socketConnect(Native Method)
   at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
   at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:820)
   at org.openqa.selenium.remote.HttpCommandExecutor.fallBackExecute(HttpCommandExecutor.java:337)
   at org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:297)
   at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.execute(NewProfileExtensionConnection.java:136)

没有任何第三方程序在任何端口上侦听。但是，我使用了FirefoxDriver的两个实例，这意味着并行打开了两个Firefox实例/
Windows，它们在Win7机器上可以正常工作，而在Windows XP机器上会出现上述问题。

我将Firefox 13与selenium2.24.1一起使用。