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
Burglar Of Steve Jobs' Home Receives Seven-Year Sentence
Kariem McFarlin broke in to the Jobs’ family home on July 17th and after jumping over the construction fence in to the garage to gain access to the house which was at the time getting renovated. Today Mr McFarlin has been sentenced to 7 years behind bars.
After gaining access to the house he packed up well steeling two iMacs, three iPods, three iPads, an Apple TV and other personal items.
McFarlin was arrested just a month after the burglary when Apple security realised that one of the iPad’s stolen from the family home was connect to the internet, this allowed them to trace the device and found Mr McFarlin sat at the other end.