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
The Current Situation Of iOS 7 As We Know It Today
We are already 3 months in to 2013 and have heard nothing at all from Apple which is unusual as we have normally seen the next generation 9.7″; iPad by now in a March event. If Apple stick to their usual schedule of this being a Software focused year then we may not have seen anything yet due to delays with in the Cupertino company.
John Gruber earlier this week mentioned that he had heard iOS 7 is currently running behind schedule and that software engineers who were working on Mac OS X 10.9 are now being made to work on iOS 7. Clayton Morris added that he has also heard some engineers have been moved from their non-profit projects to work on higher priority software projects. We can now say we have heard the same with software engineers being moved from working on Mac OS X 10.9 to work on other “more important” projects but at this moment in time we are still unsure what that more important project is.
Ever since Scott Forstall left Apple, Jony Ive has been in charge of iOS as well as more than a handful of other departments. We also seen Richard Williams leave the company after running Apple Maps, changes in management can result in flaws appearing with in department and as we know change sometimes does take a bit of time for people to adjust and in this case it looks that is the engineers. There is still very little known about iOS 7, if we are going to see a full new UI or just a few extra features and tweaks under the hud. Apple Fan Site had been contacted a couple of weeks ago and were told that engineers with in the iOS department who were allowed to test to software in the real world have got special screen protectors fitted to their device which cuts down the viewing angle, we could not get anymore details on this but it now appears that Gruber has heard the same thing.