I received the following message from Ancestry.com:
The Kentucky Birth Index, 1911-1999 has been temporarily de-published on Ancestry.com. The company recently received communication from the Kentucky Department of Library and Archives indicating that the copy of these records received by Ancestry contained names that should not have been included in the database. At the request of the state the database was removed for the time being. Ancestry.com is working with the state quickly to obtain a properly redacted index and when received, will work hard to re-publish this valuable index.