Tag-parameter in query_posts

Since I upgraded to 2.8.1 the tag-parameter of query_posts seems to have stopped working.

$getPosts->query(array(
	'order' => 'ASC',
	'tag' => 'event',
	'post_status' => array('publish', 'future')
);

The above worked before but not since the upgrade and now returns zero posts although there are a couple with the tag “event”.