iMac Core Duo: keyboard problem

Some users have been facing problems with the keyboard of their brand new iMac Core Duo. Randomly, but regularly, the keyboard freezes, and one needs to unplug it to solve the problem; till the next freeze.
According to the unlucky users, the problem could be linked to the keyboard itself and not to the iMac Core Duo. Indeed, if you change the keyboard for another one, it solves the problem.
So, if you are facing such problem call the AppleSupport to get a new keyboard as replacement; it should fix the issue.