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 September 10th iPhone Event Is Now Confirmed
It has been expected for weeks but today is the day that Apple sent out the invitations to the media inviting them to the September 10th iPhone event.
The keynote will be held in San Francisco on September 10th and start from 6pm GMT and Apple Fan Site will be covering the full event live. The event is expected to be focused on the iPhone and introducing the new iPhone 5C and also the next generation iPhone 5S.
We will be covering the event live HERE and Apple is also expected to release information on forthcoming Apple TV products, hardware or updates which we will be covering in our live video, blog and articles on the day.