I'm still on v2.0.3 and this still happens to me on the ::::: collecting data... line right at the beginning of the cycle
[ ----------------    2017/04/23 14:06:42       Gunbot v2.0.3 Beta cycle#552 ------------------------ ]
::::: collecting data...
so what I do is use the `--mark-interval 60` option in multitail, so it marks any lines in any window that don't have any progress for 60 seconds.  That way, visually I can see any hung windows.  I think there's an option in multitail that if it stops seeing output it can send me an alert or SNMP trap or run a script (such as HUP a daemon or restart) but I haven't gotten that far yet... but I know I can at least write a script that can do it if it gets too bad.  It seems to have gotten better last week or so.