Tonight i discovered that trying to edit some pages on my page dashboard it happened that the post displayed after edit command is not the one who i choose but some articles.
Maybe there is some problem with some database table.
At the moment i find following mistakes:
post id 214 ( an article) is displayed instead of post id 776 ( a page)
post id 2236 ( an article) is displayed instead of post id 815 ( a page)
During editing mode the address bar od the browser displays an addres as if you are editing the specific page i choose nor the content.