Sharepoint Blog Comment Input textbox got disappeared

I have on开发者_高级运维e blog site created.I was working as required for almost 2 month.

But, suddenly comments link stopped working. I am not able to see Add Comment Textboxes.

There is no problem of security access,I have already checked those setting.

1. Go to post.aspx
2. Find Webpart to add new comment
3. Right Click on it
4. Select webpart properties which is List Form View webpart
5. From wepart Properties , Go to Layouts,and uncheck Close the webpart
6. Save the page (post.aspx)