Is mountain lion really worth the upgrade for me? I mean personally im new to macs and im really loving lion, ive only had my mac for about a week and a half and im just getting used to the feel and stuff from the pc, and pretty much i love the wallpapers and i dont want them to go away, and I heard there is a new trojan affecting mountain lion, I mean personally i dont mind getting it since i got the new 2012 macbook pro, But should i upgrade it noww? or should i wait