4) Out of date data

You may want to map Belarus to (UTC+02:00) Minsk. However, Minsk (Belarus) is currently using UTC+03:00/no DST. Microsoft suggests Windows users in Belarus to use (UTC+03:00) Kakiningrad for now [http://support.microsoft.com/kb/2625508].

BTW, I found Microsoft has already published the update on November 22 [ http://support.microsoft.com/kb/2633952] For this specific instance, display name "(UTC+02:00) Minsk" was changed to "(UTC+02:00) Nicosia", then display name of "(UTC+03:00) Kaliningrad" was changed to "(UTC+03:00) Kaliningrad, Minsk". -Yoshito