500 - Internal server error
PHP file
All php files must be non-writeable by group and world to be parsed by suPHP. Change permissions on the php files: chmod go-w ~/public.www/*.php
The comment is actually getting logged. But instead of a message saying my comment has been submitted I get the above error. I seriously think that this is not some permissions issue, but some directory issue which is not configured properly in the serendipity admistration panel.
I have changed the settings for Default settings for new entries in my personal settings. Under this I have clicked on Yes to Comments & trackbacks to this entry requires moderation. Now every thing seems to work. Really strange for me. Strange.
Hmm. It's obviously a permissions problem: your server won't let a file be world-writeable and execute it. That's sensible, since you wouldn't want anybody's dog to be able to execute code as if he was you.
But I didn't think that we used a different file for moderation and submission. I'll scan the code later and see if anything sticks out.