Sorry if I came across as non communicative. The issue is that my ipda shows in the list of devices in the icloud Find my iphone application, while my Mac Book pro doesn't despite the fact that I entered the right aaple id and password and triple checked it.
Sorry for the late replies but I am in a different time zone. Yes I have all this checked but still it does not work . I have to tell you though that my Mac froze before that and I had to reinstall the Lion OS. I think something is wrong with my hard disks maybe?