I had the same problem, Hardy 64. I was able to fix it by:
Removing backports. sudo apt-get update sudo apt-get remove --purge libqtcore4 libqt4-xml libqt4-dbus libqt4-script libqtgui4 libaiksaurus-1.2-data libboost-signals1.34.1 lyx-common libaiksaurus-1.2-0c2a libboost-regex1.34.1 lyx sudo apt-get autoremove sudo apt-get autoclean sudo apt-get install lyx
I had the same problem, Hardy 64. I was able to fix it by:
Removing backports. 1.2-data libboost- signals1. 34.1 lyx-common libaiksaurus- 1.2-0c2a libboost- regex1. 34.1 lyx
sudo apt-get update
sudo apt-get remove --purge libqtcore4 libqt4-xml libqt4-dbus libqt4-script libqtgui4 libaiksaurus-
sudo apt-get autoremove
sudo apt-get autoclean
sudo apt-get install lyx