The method to solve the failure of IE startup when using Selenium2 for Web automation testing

My machine environment is WIN7, IE8, JDK1.5.0, Selenium 2.19.0 version. During the debugging of the WEB automated test, I encountered that Firfox starts normally, but IE8 starts and reports the following error:

java.lang.RuntimeException: org.openqa.selenium.WebDriverException: Unexpected error launching Internet Explorer. Protected Mode must be set to the same value (enabled or disabled) for all zones. (WARNING: The server did not provide any stacktrace information)
Command duration or timeout: 215 milliseconds
Build info: version: '2.19.0', revision: '15848', time: '2012-02-08 16:25:03'
System info: os.name: 'Windows Vista', os.arch: 'x86', os.version: '6.1', java.version: '1.5.0_11'
Driver info: driver.version: InternetExplorerDriver
at com.ygsoft.soaware.test.selenium.WebDriverFactory.getWebDriver(WebDriverFactory.java:32)
at com.ygsoft.soaware.test.selenium.WebDriverFactory.getWebDriver(WebDriverFactory.java:49)
at com.ygsoft.soaware.test.selenium.LoginDemoTest.testLoginSuccess(LoginDemoTest.java:30)
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:585)
at junit.framework.TestCase.runTest(TestCase.java:168)
at junit.framework.TestCase.runBare(TestCase.java:134)
at org.springframework.test.ConditionalTestCase.runBare(ConditionalTestCase.java:76)
at junit.framework.TestResult$1.protect(TestResult.java:110)
at junit.framework.TestResult.runProtected(TestResult.java:128)
at junit.framework.TestResult.run(TestResult.java:113)
at junit.framework.TestCase.run(TestCase.java:124)
at junit.framework.TestSuite.runTest(TestSuite.java:232)
at junit.framework.TestSuite.run(TestSuite.java:227)
at org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:79)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: org.openqa.selenium.WebDriverException: Unexpected error launching Internet Explorer. Protected Mode must be set to the same value (enabled or disabled) for all zones. (WARNING: The server did not provide any stacktrace information)
Command duration or timeout: 215 milliseconds
Build info: version: '2.19.0', revision: '15848', time: '2012-02-08 16:25:03'
System info: os.name: 'Windows Vista', os.arch: 'x86', os.version: '6.1', java.version: '1.5.0_11'
Driver info: driver.version: InternetExplorerDriver
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:494)
at org.openqa.selenium.remote.ErrorHandler.createThrowable(ErrorHandler.java:170)
at org.openqa.selenium.remote.ErrorHandler.throwIfResponseFailed(ErrorHandler.java:123)
at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:439)
at org.openqa.selenium.remote.RemoteWebDriver.startSession(RemoteWebDriver.java:139)
at org.openqa.selenium.ie.InternetExplorerDriver.setup(InternetExplorerDriver.java:91)
at org.openqa.selenium.ie.InternetExplorerDriver.(InternetExplorerDriver.java:48)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:494)
at java.lang.Class.newInstance0(Class.java:350)
at java.lang.Class.newInstance(Class.java:303)
at com.ygsoft.soaware.test.selenium.WebDriverFactory.getWebDriver(WebDriverFactory.java:30)
... 22 more

 I searched around Google, and some said to remove the browser's safe mode option, but found it to be useless.

So the code was modified as follows:

DesiredCapabilities ieCapabilities = DesiredCapabilities.internetExplorer();
            ieCapabilities.setCapability

                    (InternetExplorerDriver.INTRODUCE_FLAKINESS_BY_IGNORING_SECURITY_DOMAINS,true);
            driver = new InternetExplorerDriver(ieCapabilities);