Hi, Recently I've bought a mac mini 2,3Ghz i5 base model 2011. and i really love it, only does it freeze up sometimes. So now I keep the activity monitor in front, to look for the cause. (with actually doesn't show, i think it's maybe apple id related. ass i had the same thing with my iMac with i sold. but now when looking at the activity monitor it shows 4 cores doing work? although the system profiler states it has 2.