i'm newbie to use linux fedora core 6, and install that to proxy server with squid proxy(i use squid.conf default).it's not smooth to use web(slow).and user about 150-250 users online/day/24hour

Server spec(PC)
intel Core 2 Duo 2.0Ghz
RAM 1 GB kingston
HDD 160GB SATA seagate 7200
M/B ASUS P5LD2SE
Lan card :Linksys GBx2