From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4.3)
Description of problem:
After changing the machine timezone using redhat-config-date, the
clock applet does not update to the new local time.
This is particularly annoying for laptop users who are constantly
changing timezone (e.g. Red Hat consultants...)
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Observe time displayed in clock applet on panel
2. Change TZ (e.g. with redhat-config-date)
Actual Results: No change in displayed time, even though the date
command on the command line shows correct time
Expected Results: clock should update to correct time
Workaround is 'pkill gnome-panel'.
This will restart the panel and the clock will show the correct date.
I can confirm this bug.
This is fixed in RHEL4, fix was in glibc and would be quite difficult