Outlook 2010 Calendar displays shifted meeting and appointments

1. We use Exchange on 2003 SP2 and Outlook 2010 on the workstaions.
2. Some workstations are WinXP SP3 and some W7 SP1 (64bit and 32bit)
3. All appointment shifted to one hour later. That is if there was an apppointment which was 10:00 AM, it now shows as 11:00 AM
4. New meeting request show one hour ahead, that is if an appointment for 7:30 AM is sent, i see it as 6:30 AM.

The problem is we never have any such problem with Outlook 2007 and now, since we started to upgrade to Outlook 2010 it has started.

Even now - there ia no problem with WinXP! The problem is ONLY on Win7.

I checked we have no duplicate CDOEX and CDO dlls and even I re-registered both dlls.

It does not seem to help.

We work with DST disabled and it will not help!

The problem is mentioned a lot but I seem to be unable to find a usefull answer.

Regards,

Marcel