...instant messaging, supported by the increasing use of firewalls, improved trusted partner features and the use of dedicatedservers to keep track of what has been said, have made it more viable in business. Although many popular anti-virus...
http://www.computerweekly.com/Articles/2002/07/18/188441/instant-benefits.htm
...more than one server application per server with Windows. With Linux, the only applications that need their own dedicatedservers are DNS and firewall. The first because it is a memory hog and the latter because anything other than security software...
http://www.computerweekly.com/Articles/2004/03/12/201013/your-shout.htm