Transformers 2 sound doesnt run in normal play but in forwardx1.5

[tomtom011]

The receiver that i have is the panasonic SC-PT956
http://www2.panasonic.com/consumer-e...00000000005702

i have my ps3 slim hooked up to it for bluray, the sound in transformers 2 works in the menus and the dolby sign shows up on the screen but when i play the movie the dolby sign is gone. only when i fast forward the movie 1.5x does the sound come on. i also noticed that the sound option for english is dts surround sound, the sound works fine with french spanish and english 4 which are all dobly setting by the way but not in english 1 dts. my receiver does have the dts converter and transformers 2 did work on my sony receiver and its not the bluray cause ive returned it twice. does any one know whats wrong and know how to fix the settings if its that?
(ive got an optical cable hooked up from the slim to the receiver)