MySQL 4.1.7 has just been declared a production-ready 'general
availability' release. Before you all rush out and upgrade, note that a
number of people have reported some problems with MediaWiki failing
during installation on MySQL 4.1, due to a change in the authentication
protocol.
I've done a little testing, and it looks like the proper fix for this
is to recompile PHP after you've upgraded MySQL, so it uses the updated
MySQL client libraries.
The other workaround is to fiddle with the user account to set it to a
backwards-compatible mode (if you upgrade an existing database from 4.0
to 4.1, existing accounts should already be in this mode), as described
here:
http://dev.mysql.com/doc/mysql/en/Old_client.html
-- brion vibber (brion @
pobox.com)