
no, i didn't mean that you don't have a problem - i just meant i don't think there is a "bug" or something that will be fixed in a firmware update.
The problem seems to be with routing the higher bitrate of the dd / dts core tracks through your tv, via digital coax, to your amp. It's either the tv or the digital coax cable at fault.
So the solution, if you have one optical input but three optical sources, is a 3 into 1 optical switch.
You don't have to waste money and buy it not knowing if it will fix it. If you try the ps3 direct to your amp with optical and you get your 5.1ch from blu rays, dvd's and games, then you'll know you will if you connect it, along with your xbox and v+, through the optical switch.