Guidance note on Troubleshooting / Error Messages page does not link to any content

[jcogs-design]

Description of the problem The note on the docs/troubleshooting/error_messages page:

New versions of MySQL use an authentication protocol based on a password hashing algorithm that is incompatible with that used by older (pre-4.1) clients. MySQL can be configured to use the old algorithm, however. The MySQL documentation has more information on the issue.

Refers to a link to mysql.com that does not exist any more.

The note should either be corrected / updated or deleted, since as it stands it provides little useful information.