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 To Refresh All iOS Device's With Smaller Dock Connector
iMore has today learned that Apple are planning to release an update to every product on the iOS line up including the new iPhone 5, the the new iPod nano and iPod touch, the rumored 7-inch iPad mini, and an updated version of the new iPad (iPad 3).
This seams like it could annoy a lot of customers who have recently bought the iPad 3 which only was released in March. This seams like a very non Apple thing to do and the only solution I could think of to combat the disappointment is Apple to offer some sort of deal on a dock to mini dock connector either they are given them for free or with a discount (This would only be to customers who recently bought the new iPad)
Even though this seams very non Apple iMore has had a good track record.
Source : iMore.com