AntiOnline - Windows XP Security Guide (phase one):
"This guide will take you from a FRESH install of XP, to the high level of security … Note that this is more intended for singular computer use (and possibly work office) and not for mission critical server usage. While yes, … use XP for server usages, because it can handle it with the proper settings, a mission critical server requires a primary focus on the 'Server' portion, rather than being evently distrubuted between server, desktop, and game machine. … when it comes down to mission critical servers, it isn't about bending tools to work, it's about how well they work. Windows XP as a *mission* critical server is not recommended because of latency issues, forced RAM on the GUI, and process handling meant for low latency on the GUI responcivness, instead of packet and server process stability handling."

http://www.antionline.com/showthread.php?s=&threadid=255353