Problems with sound after upgrading to 11.4.

Hello all,

I have a problem with my sound that is flash related i think, did almost everything there is to read about on google but it seems not be working on my comp.
I have sound in amorok and cd and stuff but not on you tube and related sites
The sound is yummie on my 7.1 in amorok by the way, if i knew that, a would have done the upgrade al long time ago.
Any one here to help me with this?