Posts disappearing

I just made 2 posts and they both disappeared. I’ve checked my database and post_date, post_modified, post_content_modified and most importantly, post_name are not set (or in the case of the dates, set to all 0s). The URL is also wrong, presumably because the post_name is not set. I’ve tried setting these manually, but it doesn’t work.
Anyone have any ideas? Is my WordPress installation corrupt?

Also of interest, I’ve got the database integrated with a Vanilla installation and I also updated my WP installation from 2.1.2 to 2.1.3 today, right before this happened.