setCapability(InternetExplorerDriver.IE_ENSURE_CLEAN_SESSION, true);
setCapability(CapabilityType.ACCEPT_SSL_CERTS, true);
setCapability(InternetExplorerDriver.IGNORE_ZOOM_SETTING, true);
setCapability(InternetExplorerDriver.NATIVE_EVENTS, false);
setCapability(InternetExplorerDriver.INITIAL_BROWSER_URL, "");

All zoom setting in IE was 100%
protected mode was on.

platform:Windows XP, IE8 browser

DesiredCapabilities caps = DesiredCapabilities.internetExplorer();
 caps.setCapability(InternetExplorerDriver.INITIAL_BROWSER_URL, "");
 WebDriver driver = new InternetExplorerDriver(caps);