why sudo?

[Fajar Priyanto]

Hi all,
After reading some intros about ubuntu, I understand that we don't 'su-ing' 
like I used to be in other distros in doing administrative tasks. Instead, we 
are encourage to use sudo.

I have several (lame) questions:
1. is it still possible to su-ing in ubuntu? how? I tried it but I can't. 
2. if in anyway I change the behaviour by using su again (see question #1). 
Will it break anything in ubuntu? maybe a security risk?
Thanks.
-- 
Fajar Priyanto | Reg'd Linux User #327841 | http://linux2.arinet.org
Ubuntu Hoary 5.0.4
public key: https://www.arinet.org/fajar-pub.key