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
Crack Found Which Will Bypass Siri's Security Protocol And Will Allow Siri To Work On Any Device –
The guys over at Applidium are reporting that they have broken through Siri’s security protocol. This opens a whole selection of opportunities which could lead to Siri being available on any device including android and also mac
We have already seen Siri running on iPhone 4 but today’s crack blows that out of the water but could be short lived if Apple fix the bug. This crack could also be a great opportunities for developers to experiment with Siri in there own apps. To perform this crack you do need a UDID from an iPhone 4s, this looks like the only flaw in this crack as Apple could simply block certain UDID’s if they think there is any suspicious activity
Applidium has released a package of tools to developers which will allow them to start taking advantage of the crack and they then go on to say it will be easy to obtain a UDID with them. You can find out more information on their post .