Stack trace of UnreachableBrowserException

gistfile1.txt

org.openqa.selenium.remote.UnreachableBrowserException: Error communicating with the remote browser. It may have died.
Build info: version: '2.22.0', revision: '17049', time: '2012-05-29 13:32:05'
System info: os.name: 'Windows 7', os.arch: 'x86', os.version: '6.1', java.version: '1.6.0_23'
Driver info: driver.version: RemoteWebDriver
	at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:453)
	at org.openqa.selenium.remote.RemoteWebDriver.findElement(RemoteWebDriver.java:226)
	at org.openqa.selenium.remote.RemoteWebDriver.findElementByCssSelector(RemoteWebDriver.java:303)
	at org.openqa.selenium.By$ByCssSelector.findElement(By.java:406)
	at org.openqa.selenium.remote.RemoteWebDriver.findElement(RemoteWebDriver.java:218)
	at IframeTest$1.apply(IframeTest.java:42)
	at IframeTest$1.apply(IframeTest.java:39)
	at org.openqa.selenium.support.ui.FluentWait.until(FluentWait.java:200)
	at IframeTest.isElementPresent(IframeTest.java:38)
	at IframeTest.test(IframeTest.java:27)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
	at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:30)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
	at org.junit.runners.Suite.runChild(Suite.java:128)
	at org.junit.runners.Suite.runChild(Suite.java:24)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:157)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:136)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:117)
	at org.junit.runner.JUnitCore.runMain(JUnitCore.java:98)
	at org.junit.runner.JUnitCore.runMainAndExit(JUnitCore.java:53)
	at org.junit.runner.JUnitCore.main(JUnitCore.java:45)
Caused by: org.apache.http.ConnectionClosedException: Premature end of Content-Length delimited message body (expected: 203; received: 0
	at org.apache.http.impl.io.ContentLengthInputStream.read(ContentLengthInputStream.java:178)
	at org.apache.http.impl.io.ContentLengthInputStream.read(ContentLengthInputStream.java:197)
	at org.apache.http.conn.EofSensorInputStream.read(EofSensorInputStream.java:155)
	at org.apache.http.util.EntityUtils.toByteArray(EntityUtils.java:100)
	at org.openqa.selenium.remote.HttpCommandExecutor$EntityWithEncoding.<init>(HttpCommandExecutor.java:390)
	at org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:285)
	at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.execute(NewProfileExtensionConnection.java:128)
	at org.openqa.selenium.firefox.FirefoxDriver$LazyCommandExecutor.execute(FirefoxDriver.java:289)
	at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:431)
	... 42 more