my 46PFL8605/02 is connected via HDMI and optical audio with an HTS 3270, both with the latest software.

Somtimes when i switch the Channel, the TV does not found the Channel and a message "encoded Channel" appears, but installed is a normal channel. Only by switching back and back the TV found the channel.

Somtimes after i switch the Channel the TV switch from alone from the HTS to the TV-Speakers and back to the HTS.