The comments feature which used to work on my blog no longer does. Now, when you try to submit a comment, an error appears that says:
Database error: [Duplicate entry '1' for key 1]
and then there are several warning messages similar to this:
Warning: Cannot modify header information - headers already sent by (output started at /home/striketh/public_html/wp-includes/wp-db.php:80) in /home/striketh/public_html/wp-comments-post.php on line 102
what happened? How can I fix this?