Why does Panther need so much RAM to operate? Checked the RAM usage with iTattle 1.6 and shows me that the OS is using about 170 MB of RAM. Whats up with that? Can I minimize OS usage (a la the extensions manager in OS 9)? If so, how? My machine is an eMac 1.25, purchased in Feb. 2005. I have one 256MB chip and another 512 MB chip ordered.