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14 How to solve problems
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Everyone knows that software often does not do what it should do and
thus there is a need to track down problems.  We call this debugging in
a reminiscent to the moth jamming a relay in a Mark II box back in 1947.

   Most of the problems a merely configuration and user problems but
nevertheless they are the most annoying ones and responsible for many
gray hairs.  We try to give some guidelines here on how to identify and
solve the problem at hand.

* Menu:

* Debugging Tools::       Description of some useful tools.
* Debugging Hints::       Various hints on debugging.
* Common Problems::       Commonly seen problems.
* Architecture Details::  How the whole thing works internally.