My friend has an internet cafe with 15 machines all the same. They are assembled machines with no brand name. The easiest way they have found to maintain the machines is to clone a drive off another when ever DeepFreeze fails to keep out a problem and a repair/install fails to fix the problem. The machines are connected by LAN wire, through a hub to the server using a timer program. A new computer mechanic has allowed the machines to run down and work without any virus protection, firewall or Deep freeze. needles to say, they were filled with viruses and spyware. I cleaned one machine with
