A lot of these ultrabook seem to be defected, my company got four ux32vd with a lot of different manufacturing problem. We encountred:
However ASUS assistance is really good and they replaced/repaired our notebooks quickly
Fortunately In Italy ASUS accept Windows 7 license refund, you need a bank account and you must send an email to begin the procedure to info_AT_asus_DOT_it
This ultrabook is sold with a 500gb 2.5“ HDD (replaceable) and a 32gb (officially 24gb) SSD welded on the mainboard. I suggest you to erase the content of your HDD and SSD to install in a better way your main operating system.
Currently I maintaining the official page on Debian wiki, please refer to that page.
I tried to boot Lion and Mountain Lion, the first one won't boot at all, the second works with some problem.
I advice you to prepare an USB key using unibeast from tonymacx86 Boot of 10.8 image wouldn't work, so you need to disable xhci (usb3 support) from bios and boot with -x option (there are some problems with HD4000 and nVidia 620m)
Not yet done, maybe when I've more time :)
It works fine without problems, please be careful when you boot the installer, you MUST use the UEFI option.