Hi,
I have also found some problems with the comment system. I'm using Joomla! 1.0.13 I have the Security Image 4.4 Component instaled but I can't see the CAPTCHA image(only shows the reload button but no image).
And after adding a comment it shows a page with this text:
Comment added succesfully!
You are not authorised to view this resource.
You need to login.
(I have the public user comments enabled!?)
And no link to go back to the photo.

thanks