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 Takes A – 4.78% Hit In After Hours Market
Today Apple held the Q3 earnings call and it looks like the market did not like what they saw. Apple Inc closed today at $600.92 but since has fell to $571.12 in after hours trading which is a drop of 4.78% which wipes $30 of each share.
This is said to be because Apple’s sales and profit figures did not reach estimates.