Hey guys I must have a bad luck , I just sold my 15" retina which had issues and decided to go for something smaller a late 2013 13" MacBook retina. Sadly I am experiencing two problems: 1) A memory leakage it seems to be using a lot of ram I.e when I was installing diablo 3 with all apps closed the MacBook was using 7.97 GB. Generally the memory is low on boot up approx. 3.5GB but than starts increasing when I open a few web browser tabs and iTunes it gets up 5gb. FYI even if I force quit all apps I do not gain much ram. 2) When I am watching a iTunes movie in full screen i sometimes see a small part of screen stutter and even bring up a grey line like the picture below. Do you think these issues are software or hardware related? is there a fault with my new MacBook!