I have a big problem, many options of my "add new article" form have gone away : Excerpt, Custom fields, trachbacks, comments, author... WordPress just let me All in one SEO options and Link to forum.
It makes this bug just for my two admin accounts, but nos for others authors. If I created a new admin account, there is not this bug.
Whatever, options which are not displayed on the "Add new article" page are all displayed in "Add new page" form.
Moreover, I've tried to deactivate all plugins, but options are not appearing.