Dear Beta user: it appears you have an older version of a "Yahoo! Internet Explorer Services" installed on your system.
This component was installed with older versions of Yahoo! Messenger (Iceman). It causes Internet Explorer to run considerably slower, so we require that you replace it before using the new Yahoo! Mail Beta. To do so, please click the link below. You can click "Run" or "Save". We recommend you just click "Run".
After installation you may be required to restart your system.
Get the latest version of Yahoo! Internet Explorer Services