404 Error for Comments

I am getting lots of 404 error for most of post.

The url looks like:

http://www.mileycyrus-online.co.uk/miley-cyrus-at-golden-globes-ceremony.html/comments
http://www.mileycyrus-online.co.uk/miley-cyrus-at-president-obamas-inauguration-concert.html/comments

………
………
All the error ends with /comments.

Any suggestion how to fix the error??
Thanks.