Ouch! My blog was at version 3.8.1, and I was meaning to get around to upgrading to 3.8.3. I got an email saying WordPress was automatically upgraded to 3.7.3, which is really a downgrade. A byproduct of this downgrade is a mismatch between the wb_db_version in the WordPress php files and the db_version in the MySQL database. This mismatch caused some problems with the admin pages until I figured it out.