Mic works for me.

Hibernation is also causing me some issues, but I rarely do that, and with the crazy boot times, I don't think I'll be needing it too much. Maybe try the "SleepEnabler.kext" from prasys' blog post, mentioned above.

I discovered ethernet was also not working. I read into this a bit, and apparently it could have something to do with graphics (not sure how/why). I'm going to be looking into this some more.