Index: Article.php
===================================================================
--- Article.php	(revision 16139)
+++ Article.php	(working copy)
@@ -362,7 +362,12 @@
 				wfDebug( __METHOD__." failed to get page data linked to revision id $oldid\n" );
 				return false;
 			}
+			$origtitle = $this->mTitle;
 			$this->mTitle = Title::makeTitle( $data->page_namespace, $data->page_title );
+			# ensure that we got a revision of the right page
+			if( !$this->mTitle->equals( $origtitle ) ) {
+				return false;
+			}
 			$this->loadPageData( $data );
 		} else {
 			if( !$this->mDataLoaded ) {