fowls

so no one knows? The only way is to to repost them with different date and also change their initial order?

Yes. With the correct posting date, too.

I’ve setted the default theme and nothing had changed.

The installed plugins are just: favicon-manager, local-user-avatars, official-statcounter-plugin-for-wordpress, statpress-reloaded, wp-useronline. And these plugins are installed about 2-3 months ago i think. I don’t think they could affect the good-working of the site because they are well-known and overused by many users.

edit: i’ve deactivated all the plugins and the problem persists.