https://bugs.launchpad.net/ubuntu-cdimage/ bug/1040557?comments=all,
UEFI boot live-usb bricks SAMSUNG 530U3C,np700z5c laptop:
If you have courage to try it select UEFI boot from bios and than try to boot laptop using liveusb (made form Precise Pangolin 12.04.1 amd64).
Laptop hangs up in black screen. If you force power-off, after it, laptop wont start. I mean it not event start bios, just black screen no sounds nothing.