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
Apple Store To Close For One Hour to Watch Steve Jobs' Memorial ( October 19th ) –
As you may have heard Apple will be holding a ceremony on October 19th on campus to remember former CEO and Apple co-founder Steve Jobs. We have had a tip that Apple will be closing there stores for one hour in memory of Steve and also to allow the employees of Apple to watch a live webcast of the celebration.