Some Windows XP SP3 users running Internet Explorer 8 Beta 1 had some problems uninstalling this version to upgrade to IE8 beta 2, this happens when you first install Internet Explorer Beta 1 and then upgrade to Windows XP SP3. In this case users have to manually uninstall IE8 beta 1 before upgrading to IE8 beta 2. Microsoft has posted some helpful information on how to uninstall Internet explorer on IE Blog.

Full story:
http://www.teknobites.com/2008/08/31/uninstalling-in...