I started using my iMac today (not this gen the last gen) and it was fine yesterday but today it has been extremely slow. Its only a year old and now its suddenly taking 30 seconds to open up Finder and Mail and Chrome take a long time to start up. Also I noticed that the 3 buttons (red, orange, and green) at the top left of every window are grayed out. Do I have to make a Genius bar appointment or is there something I can do on my end to fix this perhaps? Thanks guys!