User blog comment:DaNASCAT/Technical Update: January 31, 2012/@comment-166269-20120131224600

On Monobook, on wikis with the new Message Wall activated, archived user talk pages no longer have their history - e.g. clicking the "history" link on [ Message Wall:Dinoguy1000/User talk archive] results in the message "There is no edit history for this page." The history is still located under the title "[ User talk:Dinoguy1000]".