WordPress MU 2.9.1 Upgrade Recommendations

Donncha has released WordPress MU 2.9.1.

Important Upgrade Step

2.9.1 introduces a new “commentmeta” table. To reduce load on your server during upgrade, Donncha recommends adding the tables BEFORE you upgrade to 2.9.1.
http://ocaoimh.ie/wpmu-add-commentmeta/

As always, make backups of your wordpress files and database before installation.

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