Not an Intel bug but something to be aware of. My new i5 3570K / Asus dual boot system was occasionally freezing under Ubuntu 12.04. A hard reset was required. Even the reset button had no effect! I had no problems with Windows 8. Installing the latest stable kernel solves the problem. see: http://partiallysanedeveloper.blogspot.com/2012/05/ivy-bridge-hd4000-linux-freeze.html ...or google "ivy bridge" "linux" "freeze"