Hi list, I think that there are a mistake in sqlcounter_expire_on_login module with large uses. I have detected that users with three duration months could navigate more than three months. The problem is with the use of TIME_DIFF function that is limited to the range allowd for TIME's values. By default, TIME's range is '-838:59:59' to '838:59:59', thirty four days, more or less. So if you have a username of two months and this uses expre_on_login module, there are a problem! I have fixed the problem modifying the query on module file: I have replaced "TIME_TO_SEC(TIMEDIFF(NOW(), acctstarttime))" by "TIMESTAMPDIFF(SECOND, acctstarttime, NOW())" and now works fine. Please, let me know if this is a bug in FreeRADIUS or If I have a mistake in my configuration (In MySQL or FreeRADIUS services). Thanks in advance. Regards, Antonio.