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
Siri Just Got It's Ass Kicked By Google Now For Desktop
Google has just announced it has revamped the Google voice search experience with in Chrome. Google’s aim is to bring the Google voice experience in Search apps and Google Now on mobile devices to your desktop.
Conversational search is what Google is naming the new feature which will be available in Chrome. The new feature does not require the user to press any buttons and like many Google Apps once the users says “Google” the voice recognition will start.
The interface takes many design ascetics from the current Google Now app for Android.
The new feature will be coming to Macs and PCs through Chrome soon.
- Google I/O 2013