Hi Jan

To be able to help you more I need additional information, I assume that
you do not have autocommit=1, but could
you share show create table user ?

I did not set any autocommit statements. So I assume it's 1 as per default.

Sure:

CREATE TABLE `user` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `userid` varchar(30) DEFAULT NULL,
  `passwd` varchar(30) DEFAULT NULL,
  `domain` varchar(30) DEFAULT NULL,
  `homeserver` varchar(30) DEFAULT NULL,
  `quotaInMiB` int(11) DEFAULT '100',
  `password_type` varchar(10) DEFAULT 'plain',
  `spamaction` enum('REJECT','ACCEPT','TAGGING') DEFAULT 'REJECT',
  `spampoint` decimal(5,1) DEFAULT '5.2',
  `virusaction` enum('REJECT','ACCEPT','REPLACE') DEFAULT 'REJECT',
  `keepFwdCopy` tinyint(1) DEFAULT '0',
  `quotaUsed` int(11) DEFAULT '0',
  `extRef` varchar(12) DEFAULT NULL,
  `mandate` int(11) DEFAULT '0',
  `FwdBounceCount` decimal(1,0) DEFAULT '0',
  `FwdActive` tinyint(1) DEFAULT '1',
  `lastActive` datetime DEFAULT '0000-00-00 00:00:00',
  `lastLogin` datetime DEFAULT '0000-00-00 00:00:00',
  `disabled` tinyint(1) DEFAULT '0',
  PRIMARY KEY (`id`),
  UNIQUE KEY `userid` (`userid`,`domain`)
) ENGINE=InnoDB AUTO_INCREMENT=26944 DEFAULT CHARSET=utf8

Kind regards

Benoit Panizzon