I was looking at the FAQ page and I think I found a dead link. It is in the section about numlock, the link "http://ktown.kde.org/~seli/numlockx/" at the bold below no longer works.
How do I get numlock to start on login?
There are two possibilities to achieve this. Or you should use a display manager that turns the numlock on (eg. gdm, check the settings) or you can use a little program called numlockx, adding numlockx on in your .xinitrc will do the job.