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
October iPhone Event to Be Held At Home (Apple Campus) –
For years Apple has held its main product launches in San Francisco. The next Apple event is reported to be closer to home as allthingsD report that Apple could be holding its big iPhone media event at Apple’s campus in Cupertino, California.
There is still no confirmation from Apple about the October 4th event. This change around could be due to the change of CEO’s earlier this year and this could of been a decision of the new CEO Tim Cook.