problem with turkish utf8 locale

[jfcgauss]

there are 4 I's in Turkish alphabet
i (small I with dot)
İ (capital I with dot, uppercase of the above)
ı (small dotless I)
I (capital dotless I, uppercase of the above)

so, unlike english, 'ı'.upper = 'I' and 'i'.upper() = 'İ'
the following python code gives wrong output on my english-installed ubuntu 11.04

# coding=utf-8
from locale import getlocale, setlocale, getdefaultlocale, LC_ALL, LC_CTYPE
setlocale(LC_ALL, 'tr_TR.UTF-8')
print 'iI'.swapcase()
print 'iıabc'.upper()

the output is:
iI
iıABC

It is like (ıiIİ) are not uppercased/caseswapped at all.

Note that I do have tr_TR.utf8 in locale -a 's output
I have installed tr_TR.utf8 with
sudo locale-gen --archive tr_TR.UTF-8

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: locales 2.13+git20100825-4
ProcVersionSignature: Ubuntu 2.6.38-10.46-generic-pae 2.6.38.7
Uname: Linux 2.6.38-10-generic-pae i686
NonfreeKernelModules: fglrx
Architecture: i386
Date: Sun Jul 31 11:02:48 2011
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: langpack-locales
UpgradeStatus: No upgrade log present (probably fresh install)

[jfcgauss (jfcgauss)]

/usr/share/i18n/locales/tr_TR file seems to correctly define upper/lower case relations of these 4 letters, but somehow I dont see it in action..