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 Ban Overturned By United States Administration
In the first product veto ban since 1987, Barack Obama’s administration quashes a ban on imports of iPads and iPhones in the US.
The import and sale of the iPhone 4, iPhone 3GS, iPad 3G and iPad 2 3G distributed by AT&T Inc were banned by the US International Trade Commission (ITC) in June, siting a patent infringement.
Samsung said in a statement:
The ITC’s decision correctly recognized that Samsung has been negotiating in good faith and that Apple remains unwilling to take a licence,
Some of the products that were banned by the ITC are well over a year old, despite this, products like the iPhone 4 are still some of the best sellers for the company.
Apple and Samsung have been fighting a huge patent war since 2010 with multiple court cases and last year a federal court ruled that Samsung owed Apple over $1 billion in damages for non essential patent infringements.
The ruling was later updated to have $450 million wiped from it after the judge decided the jurors miscalculated the level of infringement.