Hello,
I'll give the versions first:

Exchange 2003
Internet Explorer 6
Windows XP sp2

One user (and only one user) reports that all his appointments in the
Calendar are off by one hour.
For example, he schedules a meeting from 15h00 to 15h30 and invites
me. I receive an invitation for a meeting at 16h00-16h30.

Already checked: Windows Time Zone, Windows Country Settings, Internet
Explorer Language Settings, Outlook Web Access Time Zone Settings.
They are all identical with my settings: all is at UTC+1 (Brussels) +
DST.
This is the only user that reports the problem. We are on the same
Exchange server. He uses OWA, I use Outlook. He doesn't have Outlook,
only OWA. He only reported it last week. His migration from Notes to
Exchange was last november.

If this is an Exchange issue, I can pass on the possible solution, but
I don't have the authority to fix it myself. However if it is XP/IE/
OWA related, I can make changes.

I noticed that at the top of his OWA session, there is an info
message: "Gebruik de pagina Opties om de huidige lokale tijdzone in te
stellen." which roughly translates to "Use the Options page to set the
current local time zone."
Belgium does not have a special time zone like Australia or some other
countries (MS issued an update for those time zones but I don't think
it is relevant in my case).

I researched this issue (Google, Slipstick, YHM@EHLO,...) but not much
relevant came up for OWA.
I'm at a dead end and I would really appreciate fresh insights.

TIA,

--
Amedee