Moodle continues deleting registered user, after a few days of inactivity.
The "Unenrol inactivive after" parameter still with its defaults value: "Never".
The "Enrolment expiration action" parameter still with its defaults value: "Keep user enrolled".
I can see on moodle logs records of user deletion by Admin user, but i did not produce this manually.
Normally users get deleted after 7 days of inactivity as reported by users themselves, and I've notice this on mysql user table, the difference between "timemodified" and "lastaccess" fields of an deleted record, but not always.
This problem is particularly annoying as regards users "teachers", because then it is necessary to reassign courses their roles.
Any help appreciated.
Moodle version:2.5.1+ (Build: 20130719)
OS: Linux CentOS 6.4
Mysql version: 5.1.73
PHP version: 5.3.3