I'm bumping this up instead of writing a new question.

We have a person posting only homework-related questions wich are vague, obsolete or simply not a real question (this is the same dude who started the Classfull-IP-adressing debate that's currently going on). Take a look at his (http://serverfault.com/users/44270/zia-ur-rahman) questions, and you'll see the pattern quite clearly.

Is there a way for moderators or admins to block a user for a given number of days - so that they'll hopefully understand that we have rules that everyone should follow?