The following bug has been logged online:
Bug reference: 1709
Logged by: Constantin Dunayev
Email address: kostya.nipi@naftogaz.net
PostgreSQL version: 7.x, 8.0.x
Operating system: Linux, maybe others
Description: upper(), lower() don't work with UTF-8
Details:
Functions, such as upper(), lower() don't work with national (Russian)
characters when database encoding is set to UTF-8