It seems like what really got him suspended was the racist undertones in the letter he wrote. Such gems as "I myself am tired of having to pay my own extremely overpriced tuition to make up for minorities not paying theirs." and "In fact, 3 out of 3 students just in my class that are "minorities" are planning on returning to Africa and all 3 are getting a free education ON MY DOLLAR. I bet the staff here is wondering how a swastika ended up in a bathroom." My gut tells me that combined with wanting to carry a hand gun led to just to the concern of the administration.
Scott Ainslie Sutton writes "Enterprise GNU/Linux Resource Linux.com have highlighted a newly created GNU/Linux distribution named Damn Vulnerable Linux, built upon Damn Small Linux. The distribution, headed by Thorsten Schneider, aims to deliver the Operating System in such a way that it allows Security Students first hand insight and hands on experience with Security issues within GNU/Linux in order to teach them protection and mitigation techniques The project's website describes the distribution as 'the most vulnerable, exploitable Operating System ever' and it's true, the developers have ensured that it contains outdated, ill-configured, flawed code and contains GNU/Linux 2.4 Kernel which is known to have many exploitable avenues in itself. Damn Vulnerable Linux's website can be viewed here."