Hi Vladimir,
No I do not have a lot of posts. (34 pages) I see in the server log this:
PHP Fatal error: Allowed memory size of 268435456 bytes exhausted (tried to allocate 262144 bytes) in /www/wp-includes/meta.php on line 461
When I remove the post id at the Post edit Access menu I am not getting these errors and also nothing is in the log then.
Thanks.