I have a WP network install with many blogs. When I create a new blog in network administrator, the blog is created, but some tables are missing. for example wp_[id]_posts, wp_[id]_comments, wp_[id]_terms, wp_[id]_options. When I create the tables manually after the wizard, all works well. It looks that this behavoir is since the last wp update. Does anyone else have this problem?