Tvheadend

Hi,

IPTV channels are working all OK. I'm able to view them on different devices by using VLC, XBMC, Plex, etc.
But there's an issue. If I'm watching IPTV channels on several devices at the same time and one of the devices stops watching a channel, IPTV streaming is stopped on all other devices as well...
If I start watching any channel on any device again then streaming resumes on all other devices.
It looks like stopping one channel stops all streams and unsubscribes from all multicast packets.

Any ideas? 'Status' page is showing 0 for 'Input' and 'Output' columns.

TvHeadend version - 3.9.1977~gd347c3d~trusty on Ubuntu Server 14.10.

2014-11-11 10:58:34.468 subscription: 0001: "HTTP" subscribing on "ch1", weight: 100, adapter: "IPTV", network: "IPTV network", mux: "ch1", provider: "YYY", service: "Channel 1", hostname="127.0.0.1", username="xbmc", client="Lavf/55.44.100"
2014-11-11 10:58:43.825 HTTP: 127.0.0.1: /stream/channel/ab50948b34cd4c5ab0e169bac54feea4 -- 401
2014-11-11 10:58:43.826 mpegts: LRT in IPTV network - tuning on IPTV
2014-11-11 10:58:43.826 subscription: 0002: "HTTP" subscribing on "ch2", weight: 100, adapter: "IPTV", network: "IPTV network", mux: "ch2", provider: "YYY", service: "Channel 2", hostname="127.0.0.1", username="xbmc", client="Lavf/55.44.100"
2014-11-11 10:58:57.534 subscription: 0001: "HTTP" unsubscribing from "ch1", hostname="127.0.0.1", username="xbmc", client="Lavf/55.44.100"
2014-11-11 10:59:07.526 webui: Stop streaming /stream/channel/ab50948b34cd4c5ab0e169bac54feea4?profile=pass, timeout waiting for packets
2014-11-11 10:59:07.527 subscription: 0002: "HTTP" unsubscribing from "ch2", hostname="127.0.0.1", username="xbmc", client="Lavf/55.44.100"