Siyah 3.1rc2 + CM9 nightly 19 = failed to load wifi driver in catalog.
I've flashed, wiped, wiped again flashed again. Of course using kernel cleaning script etc. No go. Wifi was working fine with siyah and nightly 17 and works fine with the stock CM kernel on nightly 19. I may flash back to nightly 17 because I love my Siyah kernel that much :)
Speaking of that, coming soon (needs more testing):
Mali 3-step voltage/clock control
Forward-port legacy hotplug code (same as was in the last Daily Driver GB release) as stand-hotplug seems to be buggy **** even if it offers some nice features.
Some reworks in arch/arm/kernel/smp.c that may eliminate some RCU stall SoDs - however I believe most SoDs were caused by remaining bugs in stand-hotplug and the above change should fix them.
I thought a few patches I put in last week fixed the SoDs, but it turns out that I had disabled my SetCPU profiles at the time. If you don't use screen-off profiles with underclocking you should be stable until the above patches make it in. It could take a few days with the new kernel building code.
As to NFC - Those who installed hacks/mods previously (especially the Gingerbread forward-port that floated around for a while) may have hosed up their device and need to wipe. A common theme seems to be that those with issues were ones running hacks/mods. Those who were self-building and cherry-picked my commit from review should be fine - but I think I see only one person in that category and they are fine.