/usr/share/doc/libqt4-qt3support/LGPL_EXCEPTION.txt is in libqt4-qt3support 4:4.8.1-0ubuntu4.9.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libqt4-qt3support/../libqt4-designer/LGPL_EXCEPTION.txt