Can a user make e.g. time-changes w/o root psw ?!

Hi List, I use SUSE 9.1, and as a simple user I was able to make a shortcut onto my KDE (3.3.1) desktop pointing to "/sbin/yast2 'timezone'" and while I run it, no admin password is needed for making changes there! Is that, how it's supposed to work? I mean after starting up YaST alone, the root password is always asked; but not in the above special situation. YaST should even not remember the root password: that place is not checked at all. Actually coming from the MS-empire, where only admin can make such changes, it's somehow strange for me... Thanks, Peli Ps. I did the last YOU updates maybe 2-3 weeks ago, but I think in this case that would make no difference.