Summary: I bought one of these Ultrabooks in November 2012. Within three days the computer made an unusual sound everytime the keyboard light came on. The keyboard was also quite mushy and the fan was also noisy with the underside gets quite hot (no wonder the fan is always on). I returned it immediately to the supplying dealer who gave me a replacement straight away. Two weeks later, I called the dealer to tell him that I wasn't entirely happy with the replacement.