I'm using Wordpress 3.5.1
I noticed recently on my site that the body content of some posts is disappearing. The post still exists, all the other fields are still populated, but the post_content field is empty. It seems pretty random -- different post types; sometimes it happens immediately after content is created or updated, other times after it's just been sitting there untouched for weeks or months; some with complicated content, others with plain, short text entries.
I checked the database, and the post_content fields for these posts were empty. Often times, there was a separate autosave record that contained the post body, luckily. I've been using those to re-add the missing content.
Any ideas what could be causing the problem?