Il Mio Problema
My 20" iMac and it is old, was running slow with lots of the famous spinning Beach Ball o' Doom
La Mia Riparazione
I was able to replace the RAM chip with 2-PC2-5300 2 GB RAM Chips and it took me all of about 15 mins. If I had known about this site and all the great guides I would have done it a lot sooner.
Il Mio Consiglio
Don't be afr . . .