I've looked through trac and didn't see anything about this. Just wondering if anyone else can confirm this bug. When using the default permalinks settings and using the comments_rss_link function to display comments for a page clicking on the link it generates causes a mysql syntax error. The complete error follows.
WordPress database error: [You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'AND comment_approved = '1' ORDER BY comment_date_gmt DESC LIMIT 10' at line 1] SELECT wp2_comments.* FROM wp2_comments WHERE comment_post_ID = AND comment_approved = '1' ORDER BY comment_date_gmt DESC LIMIT 10