Ok, I thought I would post because I am losing it (started lsowly, now has become increasingly faster).
I have a GA-P55-UD2 and F11 Bios (I do use the DSDT for it).
Had sound in Lion 10.7, upgraded to 10.7.1
Ran Multibeast with System Utilites, HDA Rollback (Followed the Steps over and over)...