Randy Easley wrote: [snip]
FC4 glibc didn't have /usr/sbin/tzdata-update (it was only introduced in FC5+ and later backported to RHEL4 and RHEL3). So, after you update tzdata package, if the changes are in your default timezone, you need to return system-config-date or manually update /etc/localtime.
Jakub
Why can't you run yum update tzdata or use up2date???
The tzdata-update Jakub refers to is run as part of the glibc post-install script. It doesn't matter what you use to install it (RPM, yum, up2date, whatever). Since the FC4 glibc doesn't have the tzdata-update you need to do something else to update /etc/localtime. Perhaps this page about RHEL will help:
http://kbase.redhat.com/faq/FAQ_79_9950
There is a section that discusses what to do if you don't have tzdata-update (obviously the section about updating to the RHEL glibc won't apply).