@plantoschka
I've installed mavericks on a backup disk and all is working but ethernet. Tried a few kext and the best result is a working ethernet at the first boot after kext installation but when I reboot it begin disconnecting and riconnecting continuesly and when I boot in ML it is not working too. I've to shutdown the pc, turn off the power supply, push the power button (I think to discharge capacitors) and then I can boot with a working ethernet. I think we have to wait the Gurus to solve it.