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
When Can We Expect Apple's 2013 Keynotes ?
UPDATE: Apple has officially announced the iPhone 5S & 5S Keynote for September 10th, Live coverage here
In previous years such as 2010 and 2011 Apple had planned and held all of their keynotes in an easy to understand structure and when you put the typical Apple one year product cycle together with previous event dates it was simple to guess when you could expect to see the next generation of a product but Apple have disrupted everyone’s product keynotes expectations for 2013.
Lets step back to this year 2012. At the beginning of 2012 Tim Cook took to the stage to reveal the new iPad , The next generation Apple TV and also iPhoto for iOS. Apple CEO was back in stage in Apples annual world wide developers conference to reveal refreshed Macbook Airs, iOS 6, Retina Macbook Pro and more. Up to this time Apple was all set and following the expected product release cycle which was the same as the previous year but this is were it gets interesting and the confusion starts.
Apple held a September keynote which had not been done since 2010 in which Steve Jobs unveiled the new iPod line up so we were expecting to see refreshed iPod’s and maybe some new Mac pro’s but we got the iPhone 5 a month earlier then expected along with the new iPod range. This suggested that this would mean there was not going to be an October keynote in 2012 but a month later Apple sent out invites and revealed the 13″; Macbook Pro Retina , New iMac’s, The iPad Mini and a very unsuspected iPad 4th generation. This meant that iPad 3 or the new iPad had a very short shelve life of 7 months. This annoyed a lot of customers and also brought the question up surely Apple could not come out with the 5th Generation iPad in the normal slot of March 2013.
If you take an in depth look at Apples releases and keynotes over the last few years you will realize that every other year they focus on releasing new software and the following year will be hardware this means 2013 we are expecting a pretty big update regarding iOS 7 and the same for Mac OS X.
UPDATE: Apple has officially announced WWDC 2013 more information here