Microsoft has released a tool to block IE8.0 from installing from Windows Update...IEBlog : IE8 Blocker Toolkit Available Today!To help prevent users from installing IE8 through Automatic Update before compatibility testing has been completed, we are providing the IE8 Blocker Toolkit. This toolkit has no expiration date and can be configured either by running the registry file on the client machines or via Group Policy in domain joined environments. The Blocker Toolkit is available today from the Microsoft Download Center.
