Still a problem for me in Ubuntu Raring (13.04). E.g. with qtconfig-qt4 (4:4.8.4+dfsg-0ubuntu9) using libqtcore4 (4:4.8.4+dfsg-0ubuntu9):
$ LC_NUMERIC=C qtconfig-qt4 # shows English UI
$ LC_NUMERIC=pl qtconfig-qt4 # shows Polish UI
Some applications work correctly; Lyx, for example, does language selection based on $LANGUAGE.
Still a problem for me in Ubuntu Raring (13.04). E.g. with qtconfig-qt4 (4:4.8. 4+dfsg- 0ubuntu9) using libqtcore4 (4:4.8. 4+dfsg- 0ubuntu9) :
$ LC_NUMERIC=C qtconfig-qt4 # shows English UI
$ LC_NUMERIC=pl qtconfig-qt4 # shows Polish UI
Some applications work correctly; Lyx, for example, does language selection based on $LANGUAGE.