Find a better way to fill out subscribers uid

If you test it on your own demo site by signing up using the module on the homepage, the below is displayed. Even using the admin back-end to add users does not send out confirmation/subscription e-mails.

PDOException: SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry '2' for key 'subscriber_uid': INSERT INTO {newsletter_subscriber} (uid, email, firstname, lastname, gender, receive_format, hash, confirmation_timestamp, created) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2, :db_insert_placeholder_3, :db_insert_placeholder_4, :db_insert_placeholder_5, :db_insert_placeholder_6, :db_insert_placeholder_7, :db_insert_placeholder_8); Array ( [:db_insert_placeholder_0] => 2 [:db_insert_placeholder_1] => matrix.bob@gmail.com [:db_insert_placeholder_2] => [:db_insert_placeholder_3] => [:db_insert_placeholder_4] => [:db_insert_placeholder_5] => html [:db_insert_placeholder_6] => 6IVEYh-EXqOvH2byGinlCmJpK_1Whe096RKnK57NSFk [:db_insert_placeholder_7] => 1320106008 [:db_insert_placeholder_8] => 1320106008 ) in drupal_write_record() (line 6868 of /home/welinuxg/public_html/rootatwc/d7/includes/common.inc).