[Freeswitch-users] event inconsistency

Hi there, Has anyone ever had problems with events not being sent out over socket connections reliably? I am noticing that sometimes event notifications are sent, and sometimes they are not. For example, I have subscribed to CHANNEL_HANGUP, but depending on the timing of when I hangup the call (or when the dial plan hangs up), the event is not received. I confirmed with tcpdump that it is not even sent over the socket. Has anyone else seen his? What might be the problem? Thanks