Installation and profiles

confirming this as an issue in the 7/9 build too, I think it’s the install script not creating a ‘user_description’ column in wp_users table of the database. the mysql command

alter table wp_users add user_description varchar(255);

worked for me, though not everyone can run those commands… Once you add that, there’s no problems.

You aren’t the only one who have this problem:
http://wordpress.org/support/6/12327