Last modified: 2012-01-24 23:42:46 UTC
Special characters like Umlauts shoudl not sort after Z on categorxy pages and DPl result lists. http://www.mediawiki.org/wiki/Manual:$wgCategoryCollation tries to fix false sorting of special characters (did not test tho). DPL result lists should make us of it.
Already done for the ordermethod=sortkey