Not really familiar enough with Mandrake, but there is a generic process you can go through:

ps -eaf

Review the daemons listed there, try to identify all of them and what they do.

For the ones that you know what they are and what they do, ask yourself do you
need to run it. If not, go to your startup scripts and disable that one.

If you don't know what it is, try to do a 'man <service>' to learn more about it. If that
doesn't help, or there is no man page available for the service, kill it off and test things
out (open new windows, load programs, surf the web, etc). If you don't notice anything
obviously wrong, go ahead and disable it (you can always go back and turn it back on).

Sighup'ing those processes might cause your box to lockup, but a quick reboot should
fix it (because you haven't stopped it from loading at boot yet).

Through doing that, I was able to go to a blank inetd.conf file (actually all commented out) and a netstat profile of one service, and a very short process list.

14 processes, 1 port listening, with the added benefit of understanding what those were used for.

/nebulus