Crackly audio

hi im on 3.55 kmeaw and for the last 7 months, playing mp3,divx.mkv game or anythin it get any annoying distortion from my ps3 phat. this is over HDMI or optical, i'm just wondering if its stuffed as I cant use it like this it driving me nuts.

Anyone know of a fix or had the same issue?

Maybe flash back to ofw 3.55?

any help would be great


Thanks

D