In r46823 [1], the rctitles parameter was removed from list=recentchanges. Requests using
this parameter were reported to time out on enwiki and take very long on other wikis. The
removal of rctitles will go live on the Wikimedia servers shortly, and will appear in the
MediaWiki 1.15 release (1.14 will still have rctitles).
Roan Kattouw (Catrope)
[1]
http://www.mediawiki.org/wiki/Special:Code/MediaWiki/46823