[Freeswitch-users] xml_cdr: end_epoch is 0, billsec are negative - how does this happen?

Hello! My xml-cdrs are saved with an end_epoch of 0/end_stamp 1970-01-01 and negative duration, billsec etc.(e.g. -1306336317) - start_epoch/start_stamp values are correct. What's causing this behaviour? I'm running FreeSWITCH on a OpenVZ-Container(2.6.32-5-openvz-amd64) - could there be a relation to the cdr-issue? Regards Christian