I have a core duo 1.83mhz (I think that's right...1.83--i'm not at home to check) with 512 ram, 80gb hdd w/superdrive. I always have iTunes running. 100% all the time. When I run Safari, every so often when I am on various pages, the mac will beachball and I will have to force quit the program. This happens with firefox too. It gets very irritating. I get the beachball at least 3-4 times/day. So, do I need to back up my programs and reinstall (like WINDOWS) or buy more ram. What do you think will solve my problem?