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 Start Shipping iPhone 4s' In UK –
So Apple employees telling UK residents that Apple will not be sending out the iPhone 4s’ till Friday 14th October. It looks like they have went back on there word and are giving us Apple geeks a nice surprise. They sent emails out around lunch time today to customers who were lucky enough to be able to pre-order one of the first batch saying that there device’s have been sent out and you can expect delivery tomorrow (Subject to change). The second batch is not expected to ship for at least another week.