So if you're on Hardy and have hardy-backports enabled, remove libqtwebkit-dev and then upgrade libqt4-dev if needed. libqtwebkit-dev is obsolete if you have the hardy-backports libqt4-dev.
So if you're on Hardy and have hardy-backports enabled, remove libqtwebkit-dev and then upgrade libqt4-dev if needed. libqtwebkit-dev is obsolete if you have the hardy-backports libqt4-dev.