There are some stability issues with the plugin. I’ve rolled it back an earlier version and I would advise not installing the alpha version listed below!
: I think the issue was with a server configuration error (that I had no control, nor knowledge of). Everything seems to be working fine now.
I’m working on a rather major update to the Dunstan Error Page. The biggest feature will be a MUCH better way to deal with spam. Just thought I’d let everyone know to start licking their chops.
If you really can’t wait, the latest updates are in the trunk: http://dev.wp-plugins.org/file/dunstan-error-page/trunk/afdn_error_page.php.0