We released an updated version of Yahoo! Messenger 9.0 today (126.96.36.1998). This latest build includes a fix for the sign-in issues that have been affecting some users. If you were seeing an error code “81003005” when trying to sign in, this latest version may fix that problem. Even if you were experiencing a different kind of sign-in issue, we recommend installing this latest version.
After you’ve tried it out, please let us know how it works for you by leaving a comment on the blog.
And yes, we are still working on the installation issues! Thanks for your patience.