I just found related bug here:
https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/999110
SO this can be closed or linked to the previous.
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https://bugs.launchpad.net/bugs/1663007
Tit
/controlC0: seemas 2524 F pulseaudio
/dev/snd/controlC1: seemas 2524 F pulseaudio
BuildID: 20170201180315
Channel: Unavailable
CurrentDesktop: Unity
Date: Wed Feb 8 21:26:44 2017
Extensions: extensions.sqlite corrupt or missing
ForcedLayersAccel: False
IfupdownConfig:
# interfaces(5
