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
iOS 7 Safari Concept Video
A new iOS 7 concept video seems to be appearing everyday of the week at the moment leading up to WWDC 2013. The latest is a video concept showing what the new Safari in iOS 7 could look like.
Artists—Tim Nikischin and Marc Philip Haesen created the video after they wanted to re-imagine Safari.
Apple is expected to show the next generation of iOS at their World Wide Developers Conference which takes place 10th-14th June also Apple is also set to show off Mac OS X 10.9.