This applies to messages with Acct-Status-Type set to both Interim-Update and Stop. Acctstarttime is calculated from current date and Acct-Session-Time but 1970-01-01 is minimal possible value. This is sample for one client MAC address. radacctid | acctsessionid | nasipaddress | acctstarttime | acctstoptime | callingstationid -----------+---------------------------------------------------+------------ ---+------------------------+------------------------+------------------- 19308 | 2c:44:01:ee:80:da:poznan-internet-free:1335696598 | 10.255.223.71 | 2012-04-29 18:39:44+02 | 2012-04-29 18:46:08+02 | 2c:44:01:ee:80:da -- View this message in context: http://freeradius.1045715.n5.nabble.com/Very-huge-Acct-Session-Time-tp567971... Sent from the FreeRadius - User mailing list archive at Nabble.com.