Mac Mini 10.7 external hdmi audio cuts in and out

I have the newer mac mini, have had this one and another one previously setup on my samsung TV through hdmi then fiber to polk audio soundbar has been working fine on 10.6.  I upgraded to 10.7 and now the audio cuts in and out.  When i go to audio and set it to internal speaker it works fine.  I didn't have any issues before the upgrade.  I did swap the hdmi cable with the one from my ps3 since it isn't cutting out, and it still cuts out on the mac running 10.7. Ideas?

Same issue here, and same fix. PRAM reset... twice! I actually held it down TOO long and it tried to prompt me to reinstall my OS which scared the crap out of me, but I just clicked the "reboot" button on the setup screen and it booted fine. Audio problem gone. Thanks!

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