the changes I made for object creation have not been done
for the content repository (which has the same tree_sortkey
without a max_child_sortkey field as the old acs_objects
table). I will make the changes in 5.1 (at the time 5.0
seemed to close to release to have it go in...ah well).
Otoh, It should not matter unless the content repository is
big and mostly flat (i.e. single nodes with lots
of children).
is it on 7.2 or 7.3? Also, I assume it's been analyzed but if not do that and see what it says.