OK, well for now 10.6.5 is a bust for audio. I tried a bunch of stuff and nothing worked. Too bad, cause everything else seems peachy. The voodoo patch is the only one that seems to work, but it's not a clean solution like AppleHDA. I've found some info on getting the NC10 to 10.6.5 but that seems to be a from a different upgrade path than by using NBI. BTW, the NC10 is virtually the same as the N310.
Sound is kind of important to me, so I'm going to try for 10.6.3 which seems to be the most stable SL upgrade for the N310, and I'll do as computersolutions recommends. I'll keep my original install in case something new comes up.
1. I've noticed some people post 10.6.5 audio as working. I'd be curious to know how.
2. Has anyone been able to get the VGA out to work properly on any version of 10.6?
So far I've found it to be unusable.
UPDATE: it does work but not in mirroring mode. If your system is stuck in mirroring mode, you can't access the pref pane while the displays are garbled. But if you used NBI, just type this command in the terminal, "/Extra/bin/mirroring off" (no quotes) and don't press return; leave the terminal window selected in the foreground (or close all others to be sure and then select it), plug in your external monitor, wait a few seconds, and then press return: you're back in business. Melkor does it again...
3. There's something weird about the 1510 wireless card under 10.6.0: the average transfer rate from my network is under 100kBytes/sec. It should be doing a lot better. I'm starting to think that this card may not be a good choice for os x. In Win 7 it didn't work properly till I installed newer drivers from Broadcom, but under OS X there aren't any others than the native ones. I'll see what happens in 10.6.3...TBC...