Just got the optimus III too and run only on Linux (Kubuntu 12.04). Everything works great out of the box except 3 things:
NVIDIA Optimus (ethier use bumblebee project or wait till NVIDIA decide to add a support for Linux)
Card reader and webcam not recognised and can't even see them in the list of hardware
Function key for backlghts (all other function keys work perfect) but this might be due to a driver issue due to missing support for optimus (just a guess).
Has anyone experience similar issue / have found solutions??
Otherwise the laptop is great, solid well built, really happy about it!