Nodes können nicht mehr erstellt werden

Hi,

seit neustem erhalte ich folgenden Fehler - ich habe allerdings nichts am System geändert, daher hab ich auch echt keine Ahnung wie es plötzlich dazu kommen kann.

PDOException: SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry '39' for key 'PRIMARY': INSERT INTO {node} (nid, vid, type, language, title, uid, status, created, changed, comment, promote, sticky, tnid, translate) 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, :db_insert_placeholder_9, :db_insert_placeholder_10, :db_insert_placeholder_11, :db_insert_placeholder_12, :db_insert_placeholder_13); Array ( [:db_insert_placeholder_0] => 39 [:db_insert_placeholder_1] => 39 [:db_insert_placeholder_2] => article [:db_insert_placeholder_3] => de [:db_insert_placeholder_4] => efvir [:db_insert_placeholder_5] => 1 [:db_insert_placeholder_6] => 1 [:db_insert_placeholder_7] => 1341411995 [:db_insert_placeholder_8] => 1341411995 [:db_insert_placeholder_9] => 0 [:db_insert_placeholder_10] => 0 [:db_insert_placeholder_11] => 0 [:db_insert_placeholder_12] => 0 [:db_insert_placeholder_13] => 0 ) in drupal_write_record() (Zeile 7013 von /www/htdocs/w00d9852/.appsite_d7/includes/common.inc).