when user on school are registering, they are fed-up having to do this on each
update and each time they've never use ooo on a computer before.
this mean that they can have to register themselves tens of times for the same
version.
So that's right, they become very king in registering ooo, but i would like them
to learn more interesting function of ooo.
Teacher are also fed-up with answering questions like "hey ma am, what shall i
do now ?"
So : why should we register every version, especially each minor update (2.2.1,
2.3.1, 2.4.1, 2.4.2, 3.0.1) we could only register on the major update and not
on the minor update (which  only contains bugs corrections) 
that mean i should not register on 3.0.1 if I've already done it on 3.0.

another way is to register at the installation of openoffice, and not each time
a user come to use openoffice and he has never did it before on this particular
computer.