I've noticed that there are times when you cannot select your "Time Zone" in the System Preferences, reverting to something other than what you clicked. Well, I discovered the problem and here's the solution...
The problem is with either Norton Utilities (this seems to be a common theme) or Mac OS X itself corrupting some files, most notably the files in the unix folder "zoneinfo". This folder holds the timezone definitions and when the files inside become corrupted, you cannot select your time zone. The solution is to grab a copy of the zoneinfo folder from another computer and drop that over top of your exsisting folder.
Read the rest of the article for the how-to...
[robg adds: I've never had a problem with the time zone settings, but then again, I've never installed Norton either, so perhaps there is a correlation. Nonetheless, if you are having this problem, perhaps this fix will help...]
First off, quit everything but the Terminal. Download this zoneinfo archive [228K] to your Desktop, unstuff it, and do the following in the Terminal:
% cd /usr/share % sudo rm -R zoneinfo % sudo cp -R ~/Desktop/zoneinfo zoneinfoYou'll find immediantly that you can now select your proper time zone. Another, graphical, way to do it (if you're afraid of rm) is this way:
% cp -R /usr/share/zoneinfo ~/desktopAnd a zoneinfo file should appear on your dektop.
Mac OS X Hints
http://hints.macworld.com/article.php?story=20030221162205609