A new OS has been released. Not many people liked 10.9 Mavervicks as there were so many updates and from reviews people were saying not to bother. My brother tried to download Yosemite yesterday, but it was 'temporarily unavailable', so I'm going to wait and see the reviews before I embark this task. I'd rather not, because Safari updates already made changes I hated so I've switched to Firefox because of that. Anyone brave enough to have done it yet?