Our servers Zabbix 3.0.1 and 3.0.1 are with Zabbix Trapper component with a really strange behavior.
We use active monitoring, ie agents and proxies send the data to the Zabbix Server.

The monitoring liabilities, continue to function without any problem, but the stop monitoring assets.
How do we perceive? From time to time, by clicking on "Administration -> Queue" We received information that you can not get the information.

All the collections of active items stop functioning and Trapper Gathering process goes down to 0% usage.
The problem is solved with the application restart.

http://status.team.stack.systems/2016/03/27/zabbix-trapper-versao-3-0-x/