Add Category generates an SQL error (PostgreSQL)

Hi guys,

I got this error today.

    * warning: pg_query() [function.pg-query]: Query failed: ERROR: relation "aggregator_cid_seq" does not exist in /usr/clients/www/drupal/includes/database.pgsql.inc on line 139.
    * user warning: query: SELECT CURRVAL('aggregator_cid_seq') in /usr/clients/www/drupal/includes/database.pgsql.inc on line 232.

The tables I have are as follow:

aggregator_category               aggregator_category_item_pkey     aggregator_feed_url_key
aggregator_category_cid_seq       aggregator_category_pkey          aggregator_item
aggregator_category_feed          aggregator_category_title_key     aggregator_item_fid_idx
aggregator_category_feed_fid_idx  aggregator_feed                   aggregator_item_iid_seq
aggregator_category_feed_pkey     aggregator_feed_fid_seq           aggregator_item_pkey
aggregator_category_item          aggregator_feed_pkey              
aggregator_category_item_iid_idx  aggregator_feed_title_key         

Thank you.
Alexis Wilke