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 Set To Release iPad 4 In October –
After we reported yesterday that we may see the iPad 2s / 3 in March now the rumours have started for the iPad 4. The reports are suggesting that because of the lack of updates in the iPad 3 that Apple is planning to release another iPad later in the year around October. The iPad 4 is rumoured to be the one that is another revolutionary Apple product as is it set to go through a full redesign both internally and externally and also have integrated applications.
Digitimes has not been the most reliable source so do not build your hopes us