TV model: 42PFL7606H/12
Firmware: 000.014.104.000, 2012-11-26

I have problems with drop-outs of the dolby audio signal when using an optical cable connected to a home cinema set.
It's terrible that it keeps having dropouts with the channel advanced audio settings...!

Also HDMI ARC is not working at all with my HDMI ARC capable home cinema set!

It seems to be bugs in the firmware of the TV. Please fix it!