SQLSTATE[40001]: Serialization failure: 1213 Deadlock found when trying to get lock; try restarting transaction:

I got this error when creating content, in this case nodes. I was importing 650 small images from 5x5px to 100x100px and it crashed at 311 images with the following error:

An AJAX HTTP error occurred. HTTP 
  Result Code: 500 
  Debugging information follows. 
  Path: /batch?render=overlay&id=114&op=do 
  StatusText: error ResponseText: PDOException: 
  SQLSTATE[40001]: Serialization failure: 1213 Deadlock found when trying to get lock; try restarting transaction: 
  INSERT INTO {settings_audit_log_user_db_connection} (uid, connection_id, log_timestamp) 
  VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2); 
  Array ( 
    [:db_insert_placeholder_0] => 2 [:db_insert_placeholder_1] => 865190 
    [:db_insert_placeholder_2] => 1355405714 ) in settings_audit_log_set_connection_id() 

  line 28 of sites/all/modules/settings_audit_log/settings_audit_log.module

It uploaded the images just fine, it was the content creation that crashed it.