FULL PRODUCT VERSION :
java version "1.6.0_30"
Java(TM) SE Runtime Environment (build 1.6.0_30-b12)
Java HotSpot(TM) 64-Bit Server VM (build 20.5-b03, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows [Version 6.1.7601]

A DESCRIPTION OF THE PROBLEM :
I set in the Windows settings TimeZone: (UTC +03:00) Kaliningrad, Minsk.

And as a result execution
         System.out.println (System.getProperty ("user.timezone"));
I see
         America/Caracas
instead of
        Europe/Minsk

REGRESSION. Last worked in version 6u29


REPRODUCIBILITY :
This bug can be reproduced always.