For those not following the issue queue closely, this could use some feedback and review: http://drupal.org/node/137767 It should probably be marked "critical". Without a patch like this, there is not good support in HEAD for multiple menus (e.g. "primary links" in addition to "navigation"). I would particularly like feedback on the last patch[1] that proposes a mechanism for tracking the path to the root of the menu tree that should make the system fast. It's also pretty easy to understand the algorithm (good for maintainability), but it has the minor drawback of requiring that we set an arbitrary limit on the depth of the menu tree. Note that the existing menu system in HEAD essentially has already a limit of 6 levels deep. To put these patches in context, the goal is to be able to support the successor to the book module (i.e. a new hierarchical page structure module per Dries' wish list and the writeup I did as a SoC suggestion [2]). So, imagine a {menu_links} table with ~10,000 nodes links in it (i.e. the drupal.org handbook pages). Note that in a quick search I can't find anywhere in the d.o handbooks that more than 4 levels deep. -Peter [1]: http://drupal.org/node/137767#comment-240315 [2]: http://drupal.org/node/128731