[PD] (OT) periodic jack xruns in every 20 minutes

[Batuhan Bozkurt]

Hello, I have this strange issue. Jack reports an xrun in every exact 20 
minutes:

**** alsa_pcm: xrun of at least 1.703 msecs
18:59:17.219 XRUN callback (1).
**** alsa_pcm: xrun of at least 0.134 msecs
19:29:16.764 XRUN callback (2).
**** alsa_pcm: xrun of at least 0.511 msecs
19:49:16.459 XRUN callback (3).
**** alsa_pcm: xrun of at least 0.828 msecs
21:09:15.244 XRUN callback (4).

I think it is something that is scheduled in system. However there is i 
indication of any kind of load at that instant, this also happens when 
the computer look and feels fully idle.

I'm running Ubuntu Feisty with low latency kernel. What can it be? Any 
suggestions?

Thanks!