Sometimes TV stream doesn't play

Hi,

XBMC Frodo 12.2, ArgusTV 2.1 (single machine), DVB-T tuner

Sometimes (once every 5 times or so, inconsistent) when I try to open Live TV (which was stopped) on any channel, I get an 'ArgusTV Client unknown error' after waiting for a minute or so. After several attempts it works out.
I tried setting the service tuning timeouts to 20 seconds but it didn't help.

I enabled debugging in XBMC, and this is how the logs look like when it works and when not.

Here's how it looks like when it works:
00:24:02 T:6412 NOTICE: Creating InputStream
00:24:02 T:6412 DEBUG: PVRManager - PVR::CPVRManager::OpenLiveStream - opening live stream on channel 'Ch 10'
00:24:02 T:6412 DEBUG: opening live stream for channel 'Ch 10'
00:24:02 T:6412 DEBUG: AddOnLog: ARGUS TV client: ->_OpenLiveStream(3)
00:24:02 T:6412 INFO: AddOnLog: ARGUS TV client: Tune XBMC channel: 3
00:24:02 T:6412 INFO: AddOnLog: ARGUS TV client: Corresponding ARGUS TV channel: e4a77e18-2819-46bf-89b1-b84691a1a466
00:24:02 T:6412 DEBUG: AddOnLog: ARGUS TV client: ArgusTV/Control/TuneLiveStream, body [{"Channel":{"BroadcastStart":"","BroadcastStop":"","ChannelId":"e4a77e18-2819-46bf-89b1-b84691a1a466","ChannelType":0,"DefaultPostRecordSeconds":0,"DefaultPreRecordSeconds":0,"DisplayName":"Ch 10","GuideChannelId":"00000000-0000-0000-0000-000000000000","LogicalChannelNumber":null,"Sequence":0,"Version":0,"VisibleInGuide":true},"LiveStream":null}]
00:24:02 T:6412 DEBUG: AddOnLog: ARGUS TV client: URL: http://127.0.0.1:49943/ArgusTV/Control/TuneLiveStream
00:24:02 T:6412 DEBUG: CurlFile::Open(09E92020) http://127.0.0.1:49943/ArgusTV/Control/TuneLiveStream
00:24:02 T:5948 DEBUG: ------ Window Init (DialogBusy.xml) ------
00:24:04 T:6412 DEBUG: AddOnLog: ARGUS TV client: TuneLiveStream result 0.
00:24:04 T:6412 DEBUG: AddOnLog: ARGUS TV client: Tuned live stream: \\zamir-htpc\d$\ArgusTV\Timeshift\Card1-1-0.ts.tsbuffer
...


and when it doesn't work:

00:30:36 T:4340 NOTICE: Creating InputStream
00:30:36 T:4340 DEBUG: PVRManager - PVR::CPVRManager::OpenLiveStream - opening live stream on channel 'Ch 2'
00:30:36 T:4340 DEBUG: opening live stream for channel 'Ch 2'
00:30:36 T:4340 DEBUG: AddOnLog: ARGUS TV client: ->_OpenLiveStream(2)
00:30:36 T:4340 INFO: AddOnLog: ARGUS TV client: Tune XBMC channel: 2
00:30:36 T:4340 INFO: AddOnLog: ARGUS TV client: Corresponding ARGUS TV channel: bd8dd817-3b46-45ee-b4c5-03b57e047396
00:30:36 T:4340 DEBUG: AddOnLog: ARGUS TV client: ArgusTV/Control/TuneLiveStream, body [{"Channel":{"BroadcastStart":"","BroadcastStop":"","ChannelId":"bd8dd817-3b46-45ee-b4c5-03b57e047396","ChannelType":0,"DefaultPostRecordSeconds":0,"DefaultPreRecordSeconds":0,"DisplayName":"Ch 2","GuideChannelId":"00000000-0000-0000-0000-000000000000","LogicalChannelNumber":null,"Sequence":0,"Version":0,"VisibleInGuide":true},"LiveStream":null}]
00:30:36 T:4340 DEBUG: AddOnLog: ARGUS TV client: URL: http://127.0.0.1:49943/ArgusTV/Control/TuneLiveStream
00:30:36 T:4340 DEBUG: CurlFile::Open(08F7DA10) http://127.0.0.1:49943/ArgusTV/Control/TuneLiveStream
00:30:36 T:4340 INFO: XCURL::DllLibCurlGlobal::easy_aquire - Created session to http://127.0.0.1
00:30:36 T:5948 DEBUG: ------ Window Init (DialogBusy.xml) ------
00:30:47 T:6224 DEBUG: CAESinkDirectSound::Deinitialize: Cleaning up
00:30:47 T:6224 DEBUG: Suspended the Sink

AND THIS IS WHERE IT'S STUCK...

Your help would be greatly appreciated..