Icon missing in System Prefs

[Windowlicker]

I came across a rather weird bug when launching my System Preferences. Everything works fine, but the icon of the "CDs & DVDs" tab has disappeared. The button works and has the text and all, but this is confusing.

I've rebooted and fixed permissions. I also tried searching for a systemprefs.plist file, but couldn't find anything.. Anyone know what's going on??

I'm on dual 1.8xG5 and my system is 10.3.6.

[Diatribe]

My network icon in the computer field in the finder disappears from time to time too and is only restored by restarting. Although nothing big it is a bit annoying. It's clickable though, same as yours.
If somebody has a clue, I'd like to know too. :D