I cannot recommend PHP Nuke at all. The only reason it's fast is because it's built in PHP. It's efficiency is absolutely terrible! I remember seeing recursive category loops that, rather selecting the entire universe of records in one query and then crunching them in PHP, selected the major categories and then did a query for each and every category, really slamming MySQL with unnecessary traffic.

Look at the code. It's some of the ugliest stuff I've seen. It's also had a few well-known, and major, bugs, including ones that allowed non-authenticated users to upload files with any filename the user wanted. This was well-exploited, trust me (I speak from experience and learned a lesson- never trust other's code. . .).

Steer clear, unless it's changed significantly in the last six months or so.

-Any sufficiently advanced technology is
indistinguishable from doubletalk.