Domain Server running on Mac OS X.
From web interface click x on an agent - this should “expel” agent and did properly in past. Now it leads to a hang in domain-server requiring a hard force quit to recover (i.e. from command line kill -9 ps_of_ds)
Killing avatar-mixer, entity-server or audio-mixer does not lead to this, only killing an agent does so. Also if you click Kill All Nodes with agents present it does not lead to hang.