Hi, I've searched for answers to my problem, but keep coming up short. Basically my iMac G5 is running incredibly slow, launching programs, running programs, ect. Its the originally release of the G5 iMacs, running the latest version of Leopard. It has over 1GB of ram and the hard drive was just replaced due to the old one crapping out. I've checked Activity Monitor and everything seems to be taking up a reasonable amount of CPU power, nothing seems extreme. Most of the threads I've found on this issue seem to suggest running Fix Disk, but I don't think that is the problem considering the hard drive is brand new. (I had the same issue before the new hard drive). Could something be wrong with the RAM? I've re-installed Leopard before (archive, not clean instal) and tried I've also fixing permissions. Neither seemed to fix the problem. Thanks for the help in advance!