Outlook users are complaining that their appointments and meetings were off by an hour or two.
This is always the result of using the wrong time zone or daylight time setting. In each case, the users lived in an area that does not honor daylight saving time, but they used a time zone with the correct offset then unchecked the option to automatically adjust for DST.
While this may have worked fine in older versions of Outlook, when you use Outlook 2010 and live in an area that does not honor DST, you need to select a time zone that does not support DST. Yes, they do exist: Windows includes DST-free time zones for all UTC offsets that do not honor daylight saving time.
When each user switched to a time zone that did not have the DST checkbox, the appointment times were correct.
If you live in a DST time zone, you might think this tip doesn’t apply to you, however, anyone who creates appointments in Outlook 2007 or Outlook 2010 and chooses different time zones or uses the dual time zone features needs to choose the time zone that has the same DST properties as the intended location.