Hi All, Ive few FS servers which solely handle Parking lots and their states behind Kamailio SBC. It has all been running very good for about two years now. Just as of this morning all of those FS servers have been sending storm of NOTIFY messages to Kamailio servers. This in turn consumes all CPU of FS server and fs cli becomes just irresponsive. I'm investigating whether Kamailio have blocked FS servers via pike module and hence FS servers go crazy on resending NOTIFY ever more aggressively. So far it doesnt look like it. I just want to ask under what circumstances that even after restarting service FS it would pick on all the states and resume sending to SBC. Is there a cache/DB somehwere which causes new FS process to continue with NOTIFY storm ? Ive FS version 1.5 deployed. Thanks in advance for any help. Regards, Sammy