Dude, i'm having mad problems with my audigy and KR7A, OS unrelated. My sys won't boot with the audigy in any PCI slot. Without the Audigy, it runs fine. I have tried the memory hole trick, doesn't work, and tried reseating it many, many times.
I have no clue, but by judging by the number of mobo+audigy probs, i dont' think i'm the only one that will say the Audigy is crap.