Hi, I use Zope (2.6.1) and subclasses of the "old" OrderedFolder product (release 0.4) to handle my internal site. Each "sub-site" is a kind of "big folder", handled by a specific "sub-manager", containing until two levels of sub-folders. Each folder or sub-folder is a subclass of OrderedObjectManager, containing documents (stored as ExternalFile subclasses) as well as other instances of custom properties. I have an "index_html" method (in DTML) defined for each folder or sub-folder, which displays the ordered hierarchy of the given folders or sub-folders ; access is checked against every sub-folder, so that "private" folders or sub-folders are not displayed to unauthorized users. Data handling is OK, but while displaying my other custom classes instances is quite quick, displaying these OrderedObjectManager instances is quite slow, even when a sub-site is containing only a few number of folders or sub-folders. I've tried to use a profiler to find a bottleneck, but don't know Zope and Python internals very well so handling this problem is not very easy. Any help or advise would be very helpful. Thanks, Thierry