Curious about Daylight Savings Time and the Mac?

Of course you are:

All the details are here:

http://docs.info.apple.com/article.html?artnum=305056

If you're running Tiger (10.4.x) you need to get to 10.4.5 and then one more update.

If you're running Jaguar (is that right? it's been soooo long), you need to get to 10.3.9 and then one more update.

If you're running anything earlier than 10.3 you're on your own. As you should be.