Sound settings not sticking through reboot after 10.6.2

Since 10.6.2, my sound preferences are not sticking and always default to "internal speakers" on my MacPro1,1. I tried running the combo updater without success. Any other ideas?
Thanks.

check another forum topic for potential answer:
http://discussions.apple.com/thread.jspa?threadID=2160114&tstart=0
I had the same problem and fixed mine. Others have fixed theirs too trying different methods discussed there.
Good luck.

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