Apple released a set of software updates on 15 Feb that deal with the DST.
For my machines (Xserve G5 10.3.9, PowerBook G4 1GHZ 10.3.9, iMac G4 10.4.8, and a MacBook Pro Core 2 Duo 10.4.8) I used the automatic software updater. In most cases there were updates for Java Release 5, Security...