Hi, I've got a 2007 Aluminium iMac and I've noticed these last few weeks that it is spinning the beach ball a bit more than before and has to have a little think about things when I ask it to do something from time to time. Time for a spring clean I think. So, can anyone point a tech-savvy person towards some good articles or forum threads on how to get my Mac operating again as it should? My machine was running Tiger when I bought it and was upgraded to Leopard then Snow Leopard. I've never done a reinstall and to be honest I was hoping I wouldn't have to. I'm 100% comfortable with messing with files, folders, plists and pretty much anything else on the Mac. If I'm honest I'm just looking for a cheat sheet for regaining performance on my machine without having to figure it out for myself... Thanks in advance for any help, Craig.