xander: newer xp's won't do MP without modification i've heard...but the old ones work perfectly though. Also, my workstation also functions as a server...I have 116 processes running right now...I run a database server, webserver, nameserver, mailserver, and ftp server on here. SMP is very important for my use...even if I might not reach the same performance as you on single threaded apps, I have that second processor to take the load off the first one when I'm doing actual work.
no decent apps for linux??? take a look at http://freshmeat.net
There's plenty of good linux apps. All our server-related stuff beats the crap out of microsoft products, and it's free!
Windows is a joke of an OS...Linux gives me the control over the system I want. If I don't like something, I can change it.
b_ster: yes, I focus mainly on kernel development. You can check out my project at http://grsecurity.net It's pretty popular (it's used in Linux distributions you buy at stores)