A database error has occurred.  Did you forget to run maintenance/update.php after upgrading?  See: http://www.mediawiki.org/wiki/Manual:Upgrading#Run_the_update_script<br />
Query: SELECT  MAX(rc_timestamp)  FROM `wiki_recentchanges`   LIMIT 1  <br />
Function: SpecialRecentChanges::checkLastModified<br />
Error: 1317 Query execution was interrupted (localhost)<br />