After updating to 10.7.3 there is no sound.

and now are they looking into it?

We have to make some noice so that they will fix this asap. I realy are dependent on a quick fix!!

I hope so. I told them i'm not the only one with this problem.

I will contact them tomorrow asap as well

Resetting the SMC worked for me, Yay. Problem seems to be solved for me at least.

resetting SMC did not work for me...

Did you find a sollution?

The "sudokillallcoreaudiod" seemed to work for me temporarily. Apple please SEND an update to fix this problem! It is something that cannot be ignored because everyone use sound for various reasons. I believe this should be resolved ASAP!

I have sended my MBP to an Apple service provider. They have replaced the MoBo.

wow...

I have my mac store make a new fresh install of lion... it seems that the issue might be gone, but not sure yet