Edit: After half day, my wife’s Mac started having the same problem. I have then applied the solution that I found in the Apple
Gorilla Glass 3 To Be Shown Off @ CES 2013
This time last year Corning showed us the next generation of Gorilla Glass at their booth. The new glass was 20% stronger and 20% thinner and did not fail to impress in multiple demonstrations of its strength but now it looks like we are in for another treat this year at CES 2013 with rumours suggesting we will see Gorilla Glass 3.
Gorilla Glass 3 is set to include a feature named ‘Native Damage Resistance’ which makes it harder to scratch which will help when your device is in your pocket or bag.
- CES 2013