I was testing some items on my blogs and found that I was unable to leave comments. I looked through my settings and had comments enabled properly. I looked at the plugins and none of them affected the ability to leave comments.
I then went to Sixapart and found the following in their knowledge base article: http://www.sixapart.com/movabletype/kb/comments/comment_and_tra.html
That article set me straight and after setting my “Preferred Archive Type” to “Individual” my blog will now accept comments again.
I had to make this change individually on each blog
Comments Section fixed In Blogs
April 7, 2006 | 0 comments