---cut---
 "Debugging kernel problems is a black art. Not many people do it, and 
documentation is rare, inaccurate and incomplete. This document is no 
exception: faced with the choice of accuracy and completeness, I chose to 
attempt the latter. As usual, time was the limiting factor, and this draft is 
still in beta status. This is a typical situation for the whole topic of 
kernel debugging: building debug tools and documentation is expensive, and 
the people who write them are also the people who use them, so there's a 
tendency to build as much of the tool as necessary to do the job at hand. If 
the tool is well-written, it will be reusable by the next person who looks at 
a particular area; if not, it might fall into disuse. Consider this book a 
starting point for your own development of debugging tools, and remember: 
more than anywhere else, this is an area with ''some assembly required''."
---cut---

http://www.lemis.com/papers/Taiwan/tutorial.pdf

Don't know how's for you but personally I found this document to be 
interesting. Just wanted to share the link with people who for example do not 
read BSDHound.

// wbr