Re: How do I disable registration temporarily?
Yes.
Or just replace register.php with
<?php
// silence is golden
?>
You should look in your logs though to see where they are coming in. Sometimes they go right to bb-login.php as well. Anything related to login really. They’re not sitting there browsing the forum and clicking the [login] button.
You can also install _ck_’s Human Test plugin to prevent most of the registrations: