hi: Currently i have a network running squid as a transparent proxy server serving around 500 users. Around 40% of the users ie ( 200 users) use the network and the performance is good with very very little problem.. now my network is about to increse and almost 1200 Users will be using the proxy server. Presenly i am running a PIII Xeon processor Server with SCSI Hard Drives and 1GB of RAM. Now i need some suggestions for 1200 users. Do i need to: Upgrade or Purchase a new server OR use load balancing using 3 or 4 another servers OR just tune the currnet server for the best performance. What is the best option for my case assuming 50% of my 1200 users(ie 600) will be using the internet at the same time.. Thanks Paras.