[ADMIN] upper and lower doesn't work with german umlaut?

["K�nig, Frank"]

hello, what is wrong?

postgresql 7.1.3
suse linux 7.1

configure postgresql:
./configure --prefix=$DIR_DEST --exec-prefix=$DIR_DEST 
                --enable-local --enable-multibyte 
                --enable-odbc --enable-syslog --with-java

init database:
$DIR_DEST/bin/initdb --pgdata=$DIR_DB01 --encoding=LATIN1

check LANG-variable:
postgres@server:/app/pgsql/bin > echo $LANG
de_DE 

and that's the result:

        my_db=# select lower('�������');
          lower
        ---------
         �������
        (1 row)               

uppercase umlauts are not converted.


thanks
frank

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