I'm korea developer.
I understand the awkward English grammar, please....
The problem has suddenly occurred.
can not add blog from the site admin(blogs).
the current environmen : Wordpress2.8.2(with Multi-DB) and BBpress
However, in the same environment, the test server will work well.
$wpdb value generated when the output wp_1_option,wp_1_posts... and the results are done debugging. so, user table is not generated.
But,New user db data is generated.