I have an old 2008 iMac that I have just tried to clean up so the kids can use for games and homework. Previously I made the error of filling up the hard drive completely..and it was painfully slow. I have since removed a lot of the media Files that were clogging up the hard drive and copied to my new RiMac....however there is NO improvement in the processing speed on my Old Mac. does anyone know how I can make further changes to my old 2008 iMac to improve speed and get rid of that infernal spinning wheel.??? p.s. this is not a heavy duty processing machine, just usual internet, email, a bit of minecraft and the odd word / excel or powerpoint use... Help please.