[SR-Users] Presence issues

Hi kamailio'ns I am working on Kamailio V 4.0.3, installed from Ubuntu 12.04(precise) repository. My SIP clients(jitsi) are registering to kamailio sever successfully but their presence is not sharing between the clients. I am frequently logging following presence related errors in syslog while trying to register SIP clients to kamailio server: Oct 25 20:01:05 kamailio /usr/sbin/kamailio[15274]: INFO: pua_usrloc [ul_publish.c:221]: ul_publish(): not marked for publish Oct 25 20:01:05 kamailio /usr/sbin/kamailio[15273]: WARNING: presence [publish.c:481]: handle_publish(): Missing or unsupported event header field value Oct 25 20:01:05 kamailio /usr/sbin/kamailio[15273]: ERROR: presence [publish.c:484]: handle_publish(): event=[reg] what could be the wrong ? How can i reslove this issue ? please find in the attachment is my kamailio config file. (suggest me if any changes to be made to this configuration) Any help will greatly appreciate. Regards, Ravi