Quoting Neil Coghlan neil@esl-lounge.com:
Am I right in thinking this was a change not between major versions but from, for example, 5.5 and 5.6?
I just remember doing an upgrade and suddenly my 404 pages were coming out 95% blank as I use blocks for all menus.
Yes, it is one of the things I dislike most about Drupal release management. Once a major version is set these types of changes should not happen at that release. It means I have to keep a bastard forked copy of Drupal core to maintain consistency with releases.
-- Earnie http://r-feed.com Make a Drupal difference and review core patches.