Selenium 2.0 & IE9 - webdriver

Question

I'm using the Selenium 2.0 web drivers to try and login to a page. The following code works with the Firefox webdriver just fine, it finds the fields, fills them in and clicks the button.
driver.FindElement(By.Id("UserName")).SendKeys("name");
driver.FindElement(By.Id("Password")).SendKeys("test");
driver.FindElement(By.Id("btnLogin")).Click();
However, whenever I try to use the internet explorer webdriver it says it is unable to find the element with id == UserName. I tried using By.Name, and By.Xpath as well with valid inputs but I still get the same error saying it can't find the element. I am using IE 9 so I'm aware it may be a compatibility issue, however I can't seem to find any posts or information saying there is a known issue.
I just wanted to see if anyone else was experiencing the same issue, or if there is something I'm not doing correctly that is causing my issue. Also, this is a C# .NET project.
-- Edit --
Apparently it is an issue with IE9, I removed 9 and went back to 8 and the test works. I'm still interested to know if anyone finds out why this happens or if there is a work around.

Answer 1

The current release of Selenium (2.0b2) does not support IE9, however 2.0b3 should be released soon and supports both IE9 and Firefox 4.

Answer 2

This answer may also be relevant for anyone experiencing issues getting 'clicks' to fire with IE9.
A workaround to this is to send a .Click() to another element on the page, so that the browser gets the focus, before attempting to click the link, e.g. it's parent:
driver.FindElement(By.Id("Logout")).FindElement(By.XPath("..")).Click();
driver.FindElement(By.Id("Logout")).Click();