I have a Late 2006 C2D iMac on OSX Lion (the latest operating system available for this computer), and have never been in this situation before with a machine old enough to be cut off from security updates. For those of you who have, judging by past experience, will Apple stop issuing security updates for Lion shortly after release of this year's operating system? What happens once these updates are no longer issued- is it recommended to not use the system at all anymore due to security concerns? I bought this thing for $175 dollars almost two years ago, and due to its size I really don't see the point in trying to sell and ship it. I'm also not keen on selling locally on Craigslist. So, I think I will want to keep it for use in my studio after I purchase another Mac sometime this year.