Good. One thing about Print Center is that after installing new drivers you sometimes need to restart. You'll learn that frozen applications on OS X, when they happen, are no big deal, because OS X has memory protection that prevents one application from disrupting others. Now if you ever really have to do have to perform a hard rest of your system (every six months or so I'll get a freeze on sleep with my iBook), you can either press and hold the power button for five seconds or press command+control+power.