http://blogs.technet.com/asiasupp/archive/2007/02/08/known-issues-with-user-account-control-uac.aspxKnown Issues and Resolutions Known issues and resolutions Problem Resolution Unable to install some ActiveX controls in Internet Explorer Launch Internet Explorer elevated by clicking the Start button, and then pointing to All Programs . Right-click Interneten-USCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.technet.com/asiasupp/archive/2007/02/08/known-issues-with-user-account-control-uac.aspx#630070Thu, 08 Feb 2007 10:00:08 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:630070 Known issues with User Account Control (UAC) | MS-Next<p>PingBack from <a rel="nofollow" target="_new" href="http://www.ms-next.net/2007/02/08/known-issues-with-user-account-control-uac/">http://www.ms-next.net/2007/02/08/known-issues-with-user-account-control-uac/</a></p>