Make it more clear than it is now who applied protection when, and what their protection-summary was. pull this information into the notices listed in bugs 6176,6177,6178. Indicate this information on the discussion page, and on the edit page when a user tries to edit.
"User:JoeR protected this page on <date> with [no comment|the comment <edit summary>].
[This was the first time the page has been protected|Previous protections of the page: <prot log list>]"