Comments always off

Hello, i have problem with my wordpress in the comments area. The problem is why the comments of every post that has been made is always off. It says “Comments are closed”. I have set my discussion setting like these:

Default article settings:
1. Attempt to notify any blogs linked to from the article (slows down posting.) –> yes
2. Allow link notifications from other blogs (pingbacks and trackbacks.) –> no
3. Allow people to post comments on the article. –> yes

The last changes i made for my wordpress is delete all posts. I wonder is this the root of my problem ??

Thx …