I use a custom fields for all of posts. When making a new post the custom fields area shows every value from all the posts and values that plugins had used, that i have uninstalled. After i save the post and come back to edit, all the the custom fields area shows not values for the post and i can add new values. For a while i have been ignoring this, but the data is getting bigger and bigger and making a new post is becoming a pain. Any ideas people?